Ubuntu

Error while login & updating 16.04.2

Asked by surendra

While booting it show's " The system is runing in low graphics mode" and sometime "initramfs" don't know why it show the error repeatedly after resolving the problem. Last time had received a update of lunix generic from terminal with upgrade & dist-upgrade. After reboot boot it showed error and unable to boot again with low graphics mode & sometime "initramfs". Both tried to resolve but error comes up with update and i am using live cd to resolve problem.

root@ubuntu:/# sudo apt-get update
Hit:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Err:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Ign:2 http://dl.google.com/linux/talkplugin/deb stable InRelease
Hit:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Err:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:4 http://archive.canonical.com/ubuntu xenial InRelease
Err:4 http://archive.canonical.com/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:5 http://archive.ubuntu.com/ubuntu xenial InRelease
Err:5 http://archive.ubuntu.com/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:6 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Err:6 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:8 http://dl.google.com/linux/talkplugin/deb stable Release
Err:9 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Err:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:12 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Err:12 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:7 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Err:7 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:11 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Err:11 http://archive.ubuntu.com/ubuntu xenial-security InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Err:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Fetched 306 kB in 3s (93.3 kB/s)
Segmentation fault (core dumped)
Reading package lists... Error!
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-security/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.canonical.com/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://download.virtualbox.org/virtualbox/debian/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/wine/wine-builds/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://dl.google.com/linux/talkplugin/deb/dists/stable/Release.gpg Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Some index files failed to download. They have been ignored, or old ones used instead.
E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh > /dev/null; fi'
E: Sub-process returned an error code
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_main_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_binary-i386_Packages (1)
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.

root@ubuntu:/# sudo apt-get upgrade
Reading package lists... Error!
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_main_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_binary-i386_Packages (1)
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.

root@ubuntu:/# sudo apt-get dist-upgrade
Reading package lists... Error!
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_main_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_binary-i386_Packages (1)
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.

root@ubuntu:/# sudo dpkg --configure -a

root@ubuntu:/# sudo apt-get install -f
Reading package lists... Error!
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_main_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_binary-i386_Packages (1)
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.

root@ubuntu:/# sudo dpkg --audit
root@ubuntu:/#

Question information

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Status:
Solved
For:
Ubuntu Edit question
Assignee:
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Solved by:
Manfred Hampl
Solved:
Last query:
Last reply:
Revision history for this message
surendra (surendra-mum) said : 		#1

root@ubuntu:/# sudo apt-get autoclean
Reading package lists... Error!
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_main_binary-i386_Packages (1)
E: Unable to parse package file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_binary-i386_Packages (1)
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.

Revision history for this message
surendra (surendra-mum) said : 		#2

Tried to resolve by online help using command :

sudo rm -vf /var/lib/apt/lists/*
sudo apt-get update

Later got this output while updating :

root@ubuntu:/# apt-get update
Get:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Ign:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Ign:2 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:3 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:3 http://archive.canonical.com/ubuntu xenial InRelease
Get:4 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:5 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Hit:6 http://dl.google.com/linux/talkplugin/deb stable Release
Ign:5 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:7 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:7 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Get:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Get:9 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:9 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Get:10 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Ign:10 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Ign:4 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:11 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:11 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Fetched 645 kB in 4s (157 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

root@ubuntu:/# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

root@ubuntu:/# apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# clear


root@ubuntu:/# sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# sudo dpkg --audit
root@ubuntu:/#

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#3

Why are you using sudo if you are already root? Do you log in to the desktop as root?

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#4

Try:

cd $HOME
wget https://dl.dropbox.com/u/8850924/fixpackage
chmod +x ./fixpackage
sudo ./fixpackage

hope that helps.

Revision history for this message
surendra (surendra-mum) said : 		#5

I am now using live cd to work.

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#6

Does my script help?

Revision history for this message
surendra (surendra-mum) said : 		#7

root@ubuntu:/# cd $HOME
bash: cd: /home/ubuntu: No such file or directory
root@ubuntu:/# #!/bin/bash
root@ubuntu:/# sudo cp -arf /var/lib/dpkg /var/lib/dpkg.backup
root@ubuntu:/# sudo cp /var/lib/dpkg/available-old /var/lib/dpkg/available
root@ubuntu:/# sudo cp /var/lib/dpkg/status-old /var/lib/dpkg/status
root@ubuntu:/# sudo cp /var/lib/dpkg/available-old /var/lib/dpkg/available
root@ubuntu:/# sudo rm -rf /var/lib/dpkg/updates/*
root@ubuntu:/# sudo rm -rf /var/lib/apt/lists
root@ubuntu:/# sudo mkdir /var/lib/apt/lists
root@ubuntu:/# sudo mkdir /var/lib/apt/lists/partial
root@ubuntu:/# sudo apt-get clean

root@ubuntu:/# sudo apt-get update
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:2 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Get:4 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Ign:4 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Get:5 http://dl.google.com/linux/talkplugin/deb stable Release [2,141 B]
Ign:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:6 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:6 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Get:7 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:7 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Get:8 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages [784 B]
Get:9 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:9 http://archive.canonical.com/ubuntu xenial InRelease
Get:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Get:11 http://download.virtualbox.org/virtualbox/debian xenial/contrib i386 Packages [1,481 B]
Get:12 http://archive.canonical.com/ubuntu xenial/partner Sources [2,792 B]
Get:13 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Get:14 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial/main Sources [636 B]
Ign:13 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Get:15 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial/main i386 Packages [672 B]
Get:16 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial/main Translation-en [256 B]
Get:17 http://archive.canonical.com/ubuntu xenial/partner i386 Packages [3,624 B]
Get:18 http://archive.canonical.com/ubuntu xenial/partner Translation-en [1,964 B]
Get:19 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial/main Sources [16.8 kB]
Get:20 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial/main i386 Packages [27.0 kB]
Ign:2 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:21 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial/main Translation-en [13.2 kB]
Get:22 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:23 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial/main Sources [1,456 B]
Get:24 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial/main i386 Packages [2,384 B]
Get:25 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial/main Translation-en [980 B]
Get:26 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial/main Sources [1,000 B]
Ign:22 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:27 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:27 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:28 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Get:29 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages [1,196 kB]
Ign:28 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:30 http://archive.ubuntu.com/ubuntu xenial/main Translation-en [568 kB]
Get:31 http://archive.ubuntu.com/ubuntu xenial/main i386 DEP-11 Metadata [733 kB]
Get:32 http://archive.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons [409 kB]
Get:33 http://archive.ubuntu.com/ubuntu xenial/restricted i386 Packages [8,684 B]
Get:34 http://archive.ubuntu.com/ubuntu xenial/restricted Translation-en [2,908 B]
Get:35 http://archive.ubuntu.com/ubuntu xenial/restricted i386 DEP-11 Metadata [185 B]
Get:36 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages [7,512 kB]
Get:37 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4,354 kB]
Get:38 http://archive.ubuntu.com/ubuntu xenial/universe i386 DEP-11 Metadata [3,407 kB]
Get:39 http://archive.ubuntu.com/ubuntu xenial/universe DEP-11 64x64 Icons [7,448 kB]
Get:40 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 Packages [140 kB]
Get:41 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en [106 kB]
Get:42 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 DEP-11 Metadata [62.4 kB]
Get:43 http://archive.ubuntu.com/ubuntu xenial/multiverse DEP-11 64x64 Icons [230 kB]
Get:44 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages [547 kB]
Get:45 http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en [228 kB]
Get:46 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 DEP-11 Metadata [299 kB]
Get:47 http://archive.ubuntu.com/ubuntu xenial-updates/main DEP-11 64x64 Icons [199 kB]
Get:48 http://archive.ubuntu.com/ubuntu xenial-updates/restricted i386 Packages [7,772 B]
Get:49 http://archive.ubuntu.com/ubuntu xenial-updates/restricted Translation-en [2,548 B]
Get:50 http://archive.ubuntu.com/ubuntu xenial-updates/restricted i386 DEP-11 Metadata [156 B]
Get:51 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages [470 kB]
Get:52 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [193 kB]
Get:53 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 DEP-11 Metadata [163 kB]
Get:54 http://archive.ubuntu.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons [208 kB]
Get:55 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages [7,992 B]
Get:56 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [4,460 B]
Get:57 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 DEP-11 Metadata [3,744 B]
Get:58 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse DEP-11 64x64 Icons [7,765 B]
Get:59 http://archive.ubuntu.com/ubuntu xenial-security/main i386 Packages [275 kB]
Get:60 http://archive.ubuntu.com/ubuntu xenial-security/main Translation-en [124 kB]
Get:61 http://archive.ubuntu.com/ubuntu xenial-security/main i386 DEP-11 Metadata [54.6 kB]
Get:62 http://archive.ubuntu.com/ubuntu xenial-security/main DEP-11 64x64 Icons [45.7 kB]
Get:63 http://archive.ubuntu.com/ubuntu xenial-security/restricted i386 Packages [7,420 B]
Get:64 http://archive.ubuntu.com/ubuntu xenial-security/restricted Translation-en [2,428 B]
Get:65 http://archive.ubuntu.com/ubuntu xenial-security/restricted i386 DEP-11 Metadata [199 B]
Get:66 http://archive.ubuntu.com/ubuntu xenial-security/universe i386 Packages [125 kB]
Get:67 http://archive.ubuntu.com/ubuntu xenial-security/universe Translation-en [72.2 kB]
Get:68 http://archive.ubuntu.com/ubuntu xenial-security/universe i386 DEP-11 Metadata [35.7 kB]
Get:69 http://archive.ubuntu.com/ubuntu xenial-security/universe DEP-11 64x64 Icons [52.2 kB]
Get:70 http://archive.ubuntu.com/ubuntu xenial-security/multiverse i386 Packages [2,908 B]
Get:71 http://archive.ubuntu.com/ubuntu xenial-security/multiverse Translation-en [1,232 B]
Get:72 http://archive.ubuntu.com/ubuntu xenial-security/multiverse i386 DEP-11 Metadata [212 B]
Get:73 http://archive.ubuntu.com/ubuntu xenial-security/multiverse DEP-11 64x64 Icons [29 B]
Get:74 http://archive.ubuntu.com/ubuntu xenial-backports/restricted i386 DEP-11 Metadata [193 B]
Get:75 http://archive.ubuntu.com/ubuntu xenial-backports/main i386 Packages [4,692 B]
Get:76 http://archive.ubuntu.com/ubuntu xenial-backports/main Translation-en [3,216 B]
Get:77 http://archive.ubuntu.com/ubuntu xenial-backports/main i386 DEP-11 Metadata [3,328 B]
Get:78 http://archive.ubuntu.com/ubuntu xenial-backports/main DEP-11 64x64 Icons [29 B]
Get:79 http://archive.ubuntu.com/ubuntu xenial-backports/multiverse i386 DEP-11 Metadata [216 B]
Get:80 http://archive.ubuntu.com/ubuntu xenial-backports/multiverse DEP-11 64x64 Icons [29 B]
Get:81 http://archive.ubuntu.com/ubuntu xenial-backports/universe i386 Packages [5,628 B]
Get:82 http://archive.ubuntu.com/ubuntu xenial-backports/universe Translation-en [2,872 B]
Get:83 http://archive.ubuntu.com/ubuntu xenial-backports/universe i386 DEP-11 Metadata [4,672 B]
Get:84 http://archive.ubuntu.com/ubuntu xenial-backports/universe DEP-11 64x64 Icons [2,716 B]
Fetched 30.1 MB in 2min 10s (231 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

root@ubuntu:/# sudo dpkg --clear-avail
root@ubuntu:/# sudo dpkg --configure -a
root@ubuntu:/# sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# sudo apt-get update
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:2 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Get:3 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Ign:2 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Get:4 http://dl.google.com/linux/talkplugin/deb stable Release [2,141 B]
Get:5 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Get:6 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:6 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Ign:5 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:7 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:7 http://archive.canonical.com/ubuntu xenial InRelease
Hit:8 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages
Ign:8 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages
Get:9 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:9 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Hit:8 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages
Get:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Get:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Ign:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Ign:3 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:12 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:12 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:13 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:13 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:14 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:14 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Fetched 648 kB in 4s (157 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

root@ubuntu:/# sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

root@ubuntu:/# chmod +x ./fixpackage
root@ubuntu:/# sudo ./fixpackage
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:2 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Get:3 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Ign:3 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Get:4 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:5 http://dl.google.com/linux/talkplugin/deb stable Release [2,141 B]
Get:6 http://download.virtualbox.org/virtualbox/debian xenial/contrib i386 Packages [1,481 B]
Ign:2 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:7 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:7 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Get:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Get:9 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:9 http://archive.canonical.com/ubuntu xenial InRelease
Get:10 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages [784 B]
Get:11 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:11 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Get:12 http://archive.canonical.com/ubuntu xenial/partner Sources [2,792 B]
Get:13 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Get:14 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial/main Sources [636 B]
Ign:13 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Get:15 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial/main i386 Packages [672 B]
Get:16 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial/main Translation-en [256 B]
Get:17 http://archive.canonical.com/ubuntu xenial/partner i386 Packages [3,624 B]
Get:18 http://archive.canonical.com/ubuntu xenial/partner Translation-en [1,964 B]
Get:19 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial/main Sources [16.8 kB]
Get:20 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial/main i386 Packages [27.0 kB]
Get:21 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial/main Translation-en [13.2 kB]
Get:22 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial/main Sources [1,456 B]
Get:23 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial/main i386 Packages [2,384 B]
Get:24 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial/main Translation-en [980 B]
Get:25 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial/main Sources [1,000 B]
Ign:4 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:26 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:26 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:27 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:27 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:28 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Get:29 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages [1,196 kB]
Ign:28 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:30 http://archive.ubuntu.com/ubuntu xenial/main Translation-en [568 kB]
Get:31 http://archive.ubuntu.com/ubuntu xenial/main i386 DEP-11 Metadata [733 kB]
Get:32 http://archive.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons [409 kB]
Get:33 http://archive.ubuntu.com/ubuntu xenial/restricted i386 Packages [8,684 B]
Get:34 http://archive.ubuntu.com/ubuntu xenial/restricted Translation-en [2,908 B]
Get:35 http://archive.ubuntu.com/ubuntu xenial/restricted i386 DEP-11 Metadata [185 B]
Get:36 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages [7,512 kB]
Get:37 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4,354 kB]
Get:38 http://archive.ubuntu.com/ubuntu xenial/universe i386 DEP-11 Metadata [3,407 kB]
Get:39 http://archive.ubuntu.com/ubuntu xenial/universe DEP-11 64x64 Icons [7,448 kB]
Get:40 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 Packages [140 kB]
Get:41 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en [106 kB]
Get:42 http://archive.ubuntu.com/ubuntu xenial/multiverse i386 DEP-11 Metadata [62.4 kB]
Get:43 http://archive.ubuntu.com/ubuntu xenial/multiverse DEP-11 64x64 Icons [230 kB]
Get:44 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages [547 kB]
Get:45 http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en [228 kB]
Get:46 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 DEP-11 Metadata [299 kB]
Get:47 http://archive.ubuntu.com/ubuntu xenial-updates/main DEP-11 64x64 Icons [199 kB]
Get:48 http://archive.ubuntu.com/ubuntu xenial-updates/restricted i386 Packages [7,772 B]
Get:49 http://archive.ubuntu.com/ubuntu xenial-updates/restricted Translation-en [2,548 B]
Get:50 http://archive.ubuntu.com/ubuntu xenial-updates/restricted i386 DEP-11 Metadata [156 B]
Get:51 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages [470 kB]
Get:52 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [193 kB]
Get:53 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 DEP-11 Metadata [163 kB]
Get:54 http://archive.ubuntu.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons [208 kB]
Get:55 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages [7,992 B]
Get:56 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [4,460 B]
Get:57 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 DEP-11 Metadata [3,744 B]
Get:58 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse DEP-11 64x64 Icons [7,765 B]
Get:59 http://archive.ubuntu.com/ubuntu xenial-security/main i386 Packages [275 kB]
Get:60 http://archive.ubuntu.com/ubuntu xenial-security/main Translation-en [124 kB]
Get:61 http://archive.ubuntu.com/ubuntu xenial-security/main i386 DEP-11 Metadata [54.6 kB]
Get:62 http://archive.ubuntu.com/ubuntu xenial-security/main DEP-11 64x64 Icons [45.7 kB]
Get:63 http://archive.ubuntu.com/ubuntu xenial-security/restricted i386 Packages [7,420 B]
Get:64 http://archive.ubuntu.com/ubuntu xenial-security/restricted Translation-en [2,428 B]
Get:65 http://archive.ubuntu.com/ubuntu xenial-security/restricted i386 DEP-11 Metadata [199 B]
Get:66 http://archive.ubuntu.com/ubuntu xenial-security/universe i386 Packages [125 kB]
Get:67 http://archive.ubuntu.com/ubuntu xenial-security/universe Translation-en [72.2 kB]
Get:68 http://archive.ubuntu.com/ubuntu xenial-security/universe i386 DEP-11 Metadata [35.7 kB]
Get:69 http://archive.ubuntu.com/ubuntu xenial-security/universe DEP-11 64x64 Icons [52.2 kB]
Get:70 http://archive.ubuntu.com/ubuntu xenial-security/multiverse i386 Packages [2,908 B]
Get:71 http://archive.ubuntu.com/ubuntu xenial-security/multiverse Translation-en [1,232 B]
Get:72 http://archive.ubuntu.com/ubuntu xenial-security/multiverse i386 DEP-11 Metadata [212 B]
Get:73 http://archive.ubuntu.com/ubuntu xenial-security/multiverse DEP-11 64x64 Icons [29 B]
Get:74 http://archive.ubuntu.com/ubuntu xenial-backports/restricted i386 DEP-11 Metadata [193 B]
Get:75 http://archive.ubuntu.com/ubuntu xenial-backports/main i386 Packages [4,692 B]
Get:76 http://archive.ubuntu.com/ubuntu xenial-backports/main Translation-en [3,216 B]
Get:77 http://archive.ubuntu.com/ubuntu xenial-backports/main i386 DEP-11 Metadata [3,328 B]
Get:78 http://archive.ubuntu.com/ubuntu xenial-backports/main DEP-11 64x64 Icons [29 B]
Get:79 http://archive.ubuntu.com/ubuntu xenial-backports/multiverse i386 DEP-11 Metadata [216 B]
Get:80 http://archive.ubuntu.com/ubuntu xenial-backports/multiverse DEP-11 64x64 Icons [29 B]
Get:81 http://archive.ubuntu.com/ubuntu xenial-backports/universe i386 Packages [5,628 B]
Get:82 http://archive.ubuntu.com/ubuntu xenial-backports/universe Translation-en [2,872 B]
Get:83 http://archive.ubuntu.com/ubuntu xenial-backports/universe i386 DEP-11 Metadata [4,672 B]
Get:84 http://archive.ubuntu.com/ubuntu xenial-backports/universe DEP-11 64x64 Icons [2,716 B]
Fetched 30.1 MB in 2min 11s (228 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:2 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:3 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Ign:3 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Hit:4 http://dl.google.com/linux/talkplugin/deb stable Release
Get:5 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:5 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Get:6 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Get:7 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:7 http://archive.canonical.com/ubuntu xenial InRelease
Ign:6 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Get:9 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:9 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Get:10 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Ign:10 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Ign:2 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:11 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:11 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Fetched 645 kB in 3s (163 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/#

Not yet resolved..

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#8

Try:

sudo apt-get --reinstall install gnupg

Revision history for this message
surendra (surendra-mum) said : 		#9

Andrew it show same error. Tried to used command "apt-key update" and again sudo apt-get update/upgrade/dist-upgrade.

root@ubuntu:/# apt-get update
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:2 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Ign:2 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Get:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Get:4 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:5 http://dl.google.com/linux/talkplugin/deb stable Release [2,141 B]
Ign:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:6 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:6 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Get:7 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:7 http://archive.canonical.com/ubuntu xenial InRelease
Get:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Hit:9 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages
Ign:9 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages
Get:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Hit:9 http://dl.google.com/linux/talkplugin/deb stable/main i386 Packages
Get:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Ign:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Ign:4 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:12 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:12 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:13 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:13 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:14 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:14 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Fetched 648 kB in 4s (155 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

root@ubuntu:/# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

root@ubuntu:/# sudo dpkg --configure -a
root@ubuntu:/# sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# sudo dpkg --audit

Revision history for this message
surendra (surendra-mum) said : 		#10

root@ubuntu:/# sudo apt-get --reinstall install gnupg
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 648 kB of archives.
After this operation, 0 B of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  gnupg
Install these packages without verification? [y/N] y
Get:1 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 gnupg i386 1.4.20-1ubuntu3.1 [648 kB]
Fetched 648 kB in 3s (189 kB/s)
(Reading database ... 368573 files and directories currently installed.)
Preparing to unpack .../gnupg_1.4.20-1ubuntu3.1_i386.deb ...
Unpacking gnupg (1.4.20-1ubuntu3.1) over (1.4.20-1ubuntu3.1) ...
Processing triggers for install-info (6.1.0.dfsg.1-5) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up gnupg (1.4.20-1ubuntu3.1) ...

root@ubuntu:/# apt-get update
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Get:2 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease [18.1 kB]
Get:4 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,877 B]
Ign:4 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Hit:5 http://dl.google.com/linux/talkplugin/deb stable Release
Ign:3 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Get:6 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Ign:6 http://archive.canonical.com/ubuntu xenial InRelease
Get:7 http://dl.google.com/linux/talkplugin/deb stable Release.gpg [916 B]
Ign:7 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
Get:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease [18.1 kB]
Ign:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Ign:2 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:9 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease [18.1 kB]
Ign:9 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Get:10 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease [17.5 kB]
Ign:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Ign:10 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Get:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Fetched 645 kB in 3s (163 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.canonical.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://dl.google.com/linux/talkplugin/deb stable Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Revision history for this message
surendra (surendra-mum) said : 		#11

Still getting same error..

Revision history for this message
surendra (surendra-mum) said : 		#12

Andrew i was able to login and i am using my desktop. while login it showed some error problem report and was send. run the command apt-update, upgrade, dist-upgrade with no error. now it working but don't know what will happen on next boot. let me wait and see. Thanks for your assistance and still unable to understand why this frequently happen with my system.

Revision history for this message
Manfred Hampl (m-hampl) said : 		#13

You already had a similar question https://answers.launchpad.net/ubuntu/+question/639625 two weeks ago.

My conclusion at that time was that you have a hard disk problem.
My assumption is that you are still suffering from it.

What is the output of the command
dmesg | grep ' failed command: READ'

Revision history for this message
surendra (surendra-mum) said : 		#14

Andrew still the same issue when i rebooted today. Unable to boot showing error and after that "initramf" Done hard disk check with command :

sudo fsck /dev/sda5
sudo fsck -nf /dev/sda5

And after it used commands to resolve "initramf"

 Now again i am using live cd and same issue with update.

root@ubuntu:/# sudo apt-get update
Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease
Hit:2 http://archive.ubuntu.com/ubuntu xenial InRelease
Hit:3 http://dl.google.com/linux/talkplugin/deb stable Release
Err:2 http://archive.ubuntu.com/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Err:4 http://dl.google.com/linux/talkplugin/deb stable Release.gpg
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:5 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Err:5 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:6 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Hit:7 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Err:7 http://download.virtualbox.org/virtualbox/debian xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Err:8 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:9 http://archive.canonical.com/ubuntu xenial InRelease
Err:9 http://archive.canonical.com/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Err:10 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Hit:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Err:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Err:6 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Err:12 http://archive.ubuntu.com/ubuntu xenial-security InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Get:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Err:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
  Could not execute 'apt-key' to verify signature (is gnupg installed?)
Fetched 306 kB in 2s (103 kB/s)
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.google.com/linux/talkplugin/deb stable Release: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.canonical.com/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial-security InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-security/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.canonical.com/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://download.virtualbox.org/virtualbox/debian/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/wine/wine-builds/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu/dists/xenial/InRelease Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Failed to fetch http://dl.google.com/linux/talkplugin/deb/dists/stable/Release.gpg Could not execute 'apt-key' to verify signature (is gnupg installed?)
W: Some index files failed to download. They have been ignored, or old ones used instead.
root@ubuntu:/#

Output of above commands to asked done from live cd.

root@ubuntu:/# dmesg | grep ' failed command: READ'
root@ubuntu:/#

Revision history for this message
surendra (surendra-mum) said : 		#15

Oh sorry manfred, i taught its andrew. My hard disk seems working fine but randomly something goes wrong. don't know whats happening.

Revision history for this message
surendra (surendra-mum) said : 		#16

root@ubuntu:/# sudo dpkg --configure -a
root@ubuntu:/# sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# sudo dpkg --audit
root@ubuntu:/#

Revision history for this message
Manfred Hampl (m-hampl) said : 		#17

You have to understand that running apt-get and dpkg commands from inside a live system does not make sense at all (unless you have chroot-ed I into your hard disk installation).

Revision history for this message
Manfred Hampl (m-hampl) said : 		#18

Sorry, typo error ... chrooted into your hard disk installation ...

Revision history for this message
surendra (surendra-mum) said : 		#19

some how again i am able to login into desktop and running command from it...

locus@locus-m:~$ sudo apt-get update
Hit:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Ign:2 http://dl.google.com/linux/talkplugin/deb stable InRelease
Hit:3 http://archive.ubuntu.com/ubuntu xenial InRelease
Hit:4 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Hit:5 http://dl.google.com/linux/talkplugin/deb stable Release
Hit:6 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:7 http://ppa.launchpad.net/ubuntu-mate-dev/xenial-mate/ubuntu xenial InRelease
Hit:9 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Hit:10 http://archive.canonical.com/ubuntu xenial InRelease
Hit:11 http://ppa.launchpad.net/wine/wine-builds/ubuntu xenial InRelease
Hit:12 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:13 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
Reading package lists... Done
locus@locus-m:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
locus@locus-m:~$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
locus@locus-m:~$ sudo dpkg --configure -a
locus@locus-m:~$ sudo apt install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
locus@locus-m:~$ sudo dpkg --audit
locus@locus-m:~$

locus@locus-m:~$ dmesg | grep ' failed command: READ'
[ 43.880110] ata1.01: failed command: READ DMA
[ 134.888045] ata1.01: failed command: READ DMA
[ 200.872043] ata1.01: failed command: READ DMA
[ 232.872052] ata1.01: failed command: READ DMA
[ 263.912046] ata1.01: failed command: READ DMA
[ 294.888042] ata1.01: failed command: READ DMA
[ 327.016049] ata1.01: failed command: READ DMA
[ 393.064050] ata1.01: failed command: READ DMA
[ 425.064045] ata1.01: failed command: READ DMA
[ 458.088048] ata1.01: failed command: READ DMA
[ 493.032046] ata1.01: failed command: READ DMA
[ 527.080047] ata1.01: failed command: READ DMA
[ 559.080048] ata1.01: failed command: READ DMA
[ 592.040047] ata1.01: failed command: READ DMA
[ 629.032049] ata1.01: failed command: READ DMA
[ 661.096052] ata1.01: failed command: READ DMA
[ 692.072043] ata1.01: failed command: READ DMA
[ 728.040051] ata1.01: failed command: READ DMA
locus@locus-m:~$

Revision history for this message
Best Manfred Hampl (m-hampl) said : 		#20

You have one or two disk access failures every minute. This is not healthy.

Revision history for this message
surendra (surendra-mum) said : 		#21

So its my Hard disk issue. Already replaced many time with new hard disk and not happy sea-gate hard disk. Its a well know brand but i had suffered with failure many times before. Don't know which hard drive will have a better quality with good life.

Manfred you suggest me to change hard disk. already i have lot of data in drive.

Revision history for this message
surendra (surendra-mum) said : 		#22

Thanks Manfred Hampl, that solved my question.