Update manager is showing to tell me of updates but all details are blank except for 6o odd mb. Using 16.04 LTS and this repeats after restarting - afraid of a hack?

Why are you afraid of a hack? Very weird...

What is the full output of:

sudo apt-get update
sudo apt-get upgrade

Thanks

There was a similar question a few days ago: https://answers.launchpad.net/ubuntu/+question/674767

This seems to be a common problem, probably it is the issue which has already been reported as bug #1766217

On 10/10/18 11:17, actionparsnip wrote:
> Your question #674933 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/674933
>
> Status: Open => Needs information
>
> actionparsnip requested more information:
> Why are you afraid of a hack? Very weird...
>
> What is the full output of:
>
> sudo apt-get update
> sudo apt-get upgrade
>
> Thanks
>
The reason I am worried about hacking is I have had lots of spam
including from the new financial investment schemes and from the
scammers  who were blackmailing people about porn sites.
One of these emails contained 4 digits of a password I use quite a bit
but the characters were in reasonable order but not in the right place.
Indicating to me they had been either in my system or someone I
communicate with, analysing. I also had several Facebook friend requests
that were dubious.  I was upsetting Monsanto hacks of Facebook ID's by
exposing them when I found them. All circumstantial.
As I have Parkinson's Disease I get the shakes and worry about hitting
keys activating more issues and this keeps me away from using Terminal
etc. on bad days.   Cheers

update output

Hit:1 http://nz.archive.ubuntu.com/ubuntu xenial InRelease

Hit:2 http://nz.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:3 http://nz.archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:4 http://security.ubuntu.com/ubuntu xenial-security InRelease [107 kB]
Ign:5 http://extras.ubuntu.com/ubuntu xenial InRelease
Hit:6 http://ppa.launchpad.net/mjblenner/ppa-hal/ubuntu xenial InRelease
Ign:7 http://extras.ubuntu.com/ubuntu xenial Release
Hit:8 http://archive.canonical.com/ubuntu xenial InRelease
Ign:9 http://extras.ubuntu.com/ubuntu xenial/main Sources
Hit:10 http://ppa.launchpad.net/pellesimon/ppa/ubuntu xenial InRelease
Ign:11 http://extras.ubuntu.com/ubuntu xenial/main amd64 Packages
Ign:12 http://extras.ubuntu.com/ubuntu xenial/main i386 Packages
Ign:13 http://extras.ubuntu.com/ubuntu xenial/main all Packages
Ign:14 http://extras.ubuntu.com/ubuntu xenial/main Translation-en_NZ
Ign:15 http://extras.ubuntu.com/ubuntu xenial/main Translation-en
Ign:16 http://extras.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:17 http://extras.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Ign:9 http://extras.ubuntu.com/ubuntu xenial/main Sources
Ign:11 http://extras.ubuntu.com/ubuntu xenial/main amd64 Packages
Ign:12 http://extras.ubuntu.com/ubuntu xenial/main i386 Packages
Ign:13 http://extras.ubuntu.com/ubuntu xenial/main all Packages
Ign:14 http://extras.ubuntu.com/ubuntu xenial/main Translation-en_NZ
Ign:15 http://extras.ubuntu.com/ubuntu xenial/main Translation-en
Ign:16 http://extras.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:17 http://extras.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Ign:9 http://extras.ubuntu.com/ubuntu xenial/main Sources
Ign:11 http://extras.ubuntu.com/ubuntu xenial/main amd64 Packages
Ign:12 http://extras.ubuntu.com/ubuntu xenial/main i386 Packages
Ign:13 http://extras.ubuntu.com/ubuntu xenial/main all Packages
Ign:14 http://extras.ubuntu.com/ubuntu xenial/main Translation-en_NZ
Ign:15 http://extras.ubuntu.com/ubuntu xenial/main Translation-en
Ign:16 http://extras.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:17 http://extras.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Ign:9 http://extras.ubuntu.com/ubuntu xenial/main Sources
Ign:11 http://extras.ubuntu.com/ubuntu xenial/main amd64 Packages
Ign:12 http://extras.ubuntu.com/ubuntu xenial/main i386 Packages
Ign:13 http://extras.ubuntu.com/ubuntu xenial/main all Packages
Ign:14 http://extras.ubuntu.com/ubuntu xenial/main Translation-en_NZ
Ign:15 http://extras.ubuntu.com/ubuntu xenial/main Translation-en
Ign:16 http://extras.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:17 http://extras.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Ign:9 http://extras.ubuntu.com/ubuntu xenial/main Sources
Ign:11 http://extras.ubuntu.com/ubuntu xenial/main amd64 Packages
Ign:12 http://extras.ubuntu.com/ubuntu xenial/main i386 Packages
Ign:13 http://extras.ubuntu.com/ubuntu xenial/main all Packages
Ign:14 http://extras.ubuntu.com/ubuntu xenial/main Translation-en_NZ
Ign:15 http://extras.ubuntu.com/ubuntu xenial/main Translation-en
Ign:16 http://extras.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:17 http://extras.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Err:9 http://extras.ubuntu.com/ubuntu xenial/main Sources
   404  Not Found [IP: 91.189.92.152 80]
Ign:11 http://extras.ubuntu.com/ubuntu xenial/main amd64 Packages
Ign:12 http://extras.ubuntu.com/ubuntu xenial/main i386 Packages
Ign:13 http://extras.ubuntu.com/ubuntu xenial/main all Packages
Ign:14 http://extras.ubuntu.com/ubuntu xenial/main Translation-en_NZ
Ign:15 http://extras.ubuntu.com/ubuntu xenial/main Translation-en
Ign:16 http://extras.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:17 http://extras.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Fetched 107 kB in 31s (3,420 B/s)
Reading package lists... Done
W: Target Packages (partner/binary-amd64/Packages) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-i386/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-all/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en_NZ) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11 (partner/dep11/Components-amd64.yml) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11-icons (partner/dep11/icons-64x64.tar) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: The repository 'http://extras.ubuntu.com/ubuntu xenial Release' does
not have a Release file.
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.
E: Failed to fetch
http://extras.ubuntu.com/ubuntu/dists/xenial/main/source/Sources 404
Not Found [IP: 91.189.92.152 80]
E: Some index files failed to download. They have been ignored, or old
ones used instead.
W: Target Packages (partner/binary-amd64/Packages) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-i386/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-all/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en_NZ) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11 (partner/dep11/Components-amd64.yml) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11-icons (partner/dep11/icons-64x64.tar) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4

upgrade output

The following packages will be upgraded:
   adobe-flash-properties-gtk adobe-flashplugin apparmor apturl
apturl-common
   clamav clamav-base clamav-freshclam firefox firefox-locale-en
gnome-software
   gnome-software-common imagemagick imagemagick-6.q16 imagemagick-common
   initramfs-tools initramfs-tools-bin initramfs-tools-core libapparmor-perl
   libapparmor1 libclamav7 libkpathsea6 liblouis-data liblouis9
   libmagickcore-6.q16-2 libmagickcore-6.q16-2-extra libmagickwand-6.q16-2
   libpam-systemd libsmbclient libsystemd0 libudev1 libunity-control-center1
   libwbclient0 libxkbcommon-x11-0 libxkbcommon0 python3-louis samba-libs
   systemd systemd-sysv ubuntu-software udev unity-control-center
   unity-control-center-faces
43 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 74.9 MB of archives.
After this operation, 45.1 kB of additional disk space will be used.
Do you want to continue? [Y/n]

I see two different issues.

1. The missing details in the update-manager are a known issue, already reported as bug #1766217. There is nothing you can do in the moment but wait for the error to be corrected.

2. You have some errors in the configuration of your package management system, leading to warnings when doing updates.
It is not too hard to correct them, but I need additional information:

What is the output of the commands (to be executed in a terminal window):

cat -n /etc/apt/sources.list
cat -n /etc/apt/sources.list.d/xenial-partner.list

Remark: There is nothing in your output that would indicate that you have been hacked. Everything can be explained easily to be caused by a combination of wrong decisions by you and by the Ubuntu developers.

On 12/10/18 20:03, Manfred Hampl wrote:
> Your question #674933 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/674933
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> I see two different issues.
>
> 1. The missing details in the update-manager are a known issue, already
> reported as bug #1766217. There is nothing you can do in the moment but
> wait for the error to be corrected.
>
> 2. You have some errors in the configuration of your package management system, leading to warnings when doing updates.
> It is not too hard to correct them, but I need additional information:
>
> What is the output of the commands (to be executed in a terminal
> window):
>
> cat -n /etc/apt/sources.list
> cat -n /etc/apt/sources.list.d/xenial-partner.list
>
> Remark: There is nothing in your output that would indicate that you
> have been hacked. Everything can be explained easily to be caused by a
> combination of wrong decisions by you and by the Ubuntu developers.
>
      1    # deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64
(20160420.1)]/ xenial main restricted
      2    # deb cdrom:[Ubuntu 14.04.1 LTS _Trusty Tahr_ - Release i386
(20140722.2)]/ xenial main restricted
      3    # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release
amd64 (20120425)]/ precise main restricted
      4    # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release
amd64 (20120425)]/ dists/precise/restricted/binary-i386/
      5    # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release
amd64 (20120425)]/ dists/precise/main/binary-i386/
      6
      7
      8    # See http://help.ubuntu.com/community/UpgradeNotes for how
to upgrade to
      9    # newer versions of the distribution.
     10    deb http://nz.archive.ubuntu.com/ubuntu/ xenial main restricted
     11    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial main
restricted
     12
     13    ## Major bug fix updates produced after the final release of the
     14    ## distribution.
     15    deb http://nz.archive.ubuntu.com/ubuntu/ xenial-updates main
restricted
     16    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
main restricted
     17
     18    ## N.B. software from this repository is ENTIRELY UNSUPPORTED
by the Ubuntu
     19    ## team. Also, please note that software in universe WILL NOT
receive any
     20    ## review or updates from the Ubuntu security team.
     21    deb http://nz.archive.ubuntu.com/ubuntu/ xenial universe
     22    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial universe
     23    deb http://nz.archive.ubuntu.com/ubuntu/ xenial-updates universe
     24    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
universe
     25
     26    ## N.B. software from this repository is ENTIRELY UNSUPPORTED
by the Ubuntu
     27    ## team, and may not be under a free licence. Please satisfy
yourself as to
     28    ## your rights to use the software. Also, please note that
software in
     29    ## multiverse WILL NOT receive any review or updates from the
Ubuntu
     30    ## security team.
     31    deb http://nz.archive.ubuntu.com/ubuntu/ xenial multiverse
     32    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial multiverse
     33    deb http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
multiverse
     34    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
multiverse
     35
     36    ## N.B. software from this repository may not have been tested as
     37    ## extensively as that contained in the main release,
although it includes
     38    ## newer versions of some applications which may provide
useful features.
     39    ## Also, please note that software in backports WILL NOT
receive any review
     40    ## or updates from the Ubuntu security team.
     41    deb http://nz.archive.ubuntu.com/ubuntu/ xenial-backports
main restricted universe multiverse
     42    deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-backports
main restricted universe multiverse
     43
     44    deb http://security.ubuntu.com/ubuntu xenial-security main
restricted
     45    deb-src http://security.ubuntu.com/ubuntu xenial-security
main restricted
     46    deb http://security.ubuntu.com/ubuntu xenial-security universe
     47    deb-src http://security.ubuntu.com/ubuntu xenial-security
universe
     48    deb http://security.ubuntu.com/ubuntu xenial-security multiverse
     49    deb-src http://security.ubuntu.com/ubuntu xenial-security
multiverse
     50
     51    ## Uncomment the following two lines to add software from
Canonical's
     52    ## 'partner' repository.
     53    ## This software is not part of Ubuntu, but is offered by
Canonical and the
     54    ## respective vendors as a service to Ubuntu users.
     55    deb http://archive.canonical.com/ubuntu xenial partner
     56    deb-src http://archive.canonical.com/ubuntu xenial partner
     57
     58    ## This software is not part of Ubuntu, but is offered by
third-party
     59    ## developers who want to ship their latest software.
     60    deb http://extras.ubuntu.com/ubuntu xenial main
     61    deb-src http://extras.ubuntu.com/ubuntu xenial main
     62
     63
     64    # See http://help.ubuntu.com/community/UpgradeNotes for how
to upgrade to
     65    # newer versions of the distribution.
     66    # deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial main
restricted
     67
     68    ## Major bug fix updates produced after the final release of the
     69    ## distribution.
     70    # deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
main restricted
     71
     72    ## N.B. software from this repository is ENTIRELY UNSUPPORTED
by the Ubuntu
     73    ## team, and may not be under a free licence. Please satisfy
yourself as to
     74    ## your rights to use the software. Also, please note that
software in
     75    ## universe WILL NOT receive any review or updates from the
Ubuntu security
     76    ## team.
     77    # deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial universe
     78    # deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
universe
     79
     80    ## N.B. software from this repository is ENTIRELY UNSUPPORTED
by the Ubuntu
     81    ## team, and may not be under a free licence. Please satisfy
yourself as to
     82    ## your rights to use the software. Also, please note that
software in
     83    ## multiverse WILL NOT receive any review or updates from the
Ubuntu
     84    ## security team.
     85    # deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial multiverse
     86    # deb-src http://nz.archive.ubuntu.com/ubuntu/ xenial-updates
multiverse
     87
     88    ## N.B. software from this repository may not have been tested as
     89    ## extensively as that contained in the main release,
although it includes
     90    ## newer versions of some applications which may provide
useful features.
     91    ## Also, please note that software in backports WILL NOT
receive any review
     92    ## or updates from the Ubuntu security team.
     93    # deb-src http://nz.archive.ubuntu.com/ubuntu/
xenial-backports main restricted universe multiverse
     94
     95    ## Uncomment the following two lines to add software from
Canonical's
     96    ## 'partner' repository.
     97    ## This software is not part of Ubuntu, but is offered by
Canonical and the
     98    ## respective vendors as a service to Ubuntu users.
     99    # deb http://archive.canonical.com/ubuntu xenial partner
    100    # deb-src http://archive.canonical.com/ubuntu xenial partner
    101
    102    # deb-src http://security.ubuntu.com/ubuntu xenial-security
main restricted
    103    # deb-src http://security.ubuntu.com/ubuntu xenial-security
universe
    104    # deb-src http://security.ubuntu.com/ubuntu xenial-security
multiverse

and

      1    # channel for the xenial (16.04) partner channel
      2    #
      3    #:description:This channel contains the partner software for
xenial
      4    deb http://archive.canonical.com/ubuntu xenial partner

Cheers

Ok, should not be too hard.

Open a terminal window and issue the command

sudo rm /etc/apt/sources.list.d/xenial-partner.list

Then issue the command

sudo gedit /etc/apt/sources.list

This will open an editor with the sources.list configuration file loaded.
Scroll down to line 60 and 61 (that are the lines containing the word "extras") and put a '#' character to the beginning of the line, changing the contents
from:
deb http://extras.ubuntu.com/ubuntu xenial main
deb-src http://extras.ubuntu.com/ubuntu xenial main
to:
# deb http://extras.ubuntu.com/ubuntu xenial main
# deb-src http://extras.ubuntu.com/ubuntu xenial main

Then save the file and close the editor.

Finally re-execute the command

sudo apt-get update

and copy/paste the output that you receive for this command, that we can check the results.

On 12/10/18 21:32, Manfred Hampl wrote:
> Your question #674933 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/674933
>
> Status: Open => Answered
>
> Manfred Hampl proposed the following answer:
> Ok, should not be too hard.
>
> Open a terminal window and issue the command
>
> sudo rm /etc/apt/sources.list.d/xenial-partner.list
>
> Then issue the command
>
> sudo gedit /etc/apt/sources.list
>
> This will open an editor with the sources.list configuration file loaded.
> Scroll down to line 60 and 61 (that are the lines containing the word "extras") and put a '#' character to the beginning of the line, changing the contents
> from:
> deb http://extras.ubuntu.com/ubuntu xenial main
> deb-src http://extras.ubuntu.com/ubuntu xenial main
> to:
> # deb http://extras.ubuntu.com/ubuntu xenial main
> # deb-src http://extras.ubuntu.com/ubuntu xenial main
>
> Then save the file and close the editor.
>
> Finally re-execute the command
>
> sudo apt-get update
>
> and copy/paste the output that you receive for this command, that we can
> check the results.
>
Hit:1 http://nz.archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://nz.archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
Get:3 http://nz.archive.ubuntu.com/ubuntu xenial-backports InRelease
[107 kB]
Hit:4 http://ppa.launchpad.net/mjblenner/ppa-hal/ubuntu xenial InRelease
Hit:5 http://archive.canonical.com/ubuntu xenial InRelease
Get:6 http://security.ubuntu.com/ubuntu xenial-security InRelease [107 kB]
Hit:7 http://ppa.launchpad.net/pellesimon/ppa/ubuntu xenial InRelease
Get:8 http://nz.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages [858 kB]
Get:9 http://nz.archive.ubuntu.com/ubuntu xenial-updates/main i386
Packages [769 kB]
Get:10 http://nz.archive.ubuntu.com/ubuntu xenial-updates/main amd64
DEP-11 Metadata [320 kB]
Get:11 http://nz.archive.ubuntu.com/ubuntu xenial-updates/main DEP-11
64x64 Icons [232 kB]
Get:12 http://nz.archive.ubuntu.com/ubuntu xenial-updates/universe amd64
Packages [690 kB]
Get:13 http://nz.archive.ubuntu.com/ubuntu xenial-updates/universe i386
Packages [632 kB]
Get:14 http://nz.archive.ubuntu.com/ubuntu xenial-updates/universe amd64
DEP-11 Metadata [247 kB]
Get:15 http://nz.archive.ubuntu.com/ubuntu xenial-updates/universe
DEP-11 64x64 Icons [333 kB]
Get:16 http://nz.archive.ubuntu.com/ubuntu xenial-updates/multiverse
amd64 DEP-11 Metadata [5,964 B]
Get:17 http://nz.archive.ubuntu.com/ubuntu xenial-updates/multiverse
DEP-11 64x64 Icons [14.3 kB]
Get:18 http://nz.archive.ubuntu.com/ubuntu xenial-backports/main amd64
DEP-11 Metadata [3,328 B]
Get:19 http://nz.archive.ubuntu.com/ubuntu xenial-backports/universe
amd64 DEP-11 Metadata [5,100 B]
Get:20 http://security.ubuntu.com/ubuntu xenial-security/main amd64
DEP-11 Metadata [67.7 kB]
94% [Waiting for headers]
Get:21 http://security.ubuntu.com/ubuntu xenial-security/main DEP-11
64x64 Icons [68.0 kB]
Get:22 http://security.ubuntu.com/ubuntu xenial-security/universe amd64
DEP-11 Metadata [108 kB]
Get:23 http://security.ubuntu.com/ubuntu xenial-security/universe DEP-11
64x64 Icons [145 kB]
Fetched 4,821 kB in 4s (1,057 kB/s)
Reading package lists... Done
W: Target Packages (partner/binary-amd64/Packages) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-i386/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-all/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en_NZ) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11 (partner/dep11/Components-amd64.yml) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11-icons (partner/dep11/icons-64x64.tar) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-amd64/Packages) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-i386/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-all/Packages) is configured multiple
times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en_NZ) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11 (partner/dep11/Components-amd64.yml) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11-icons (partner/dep11/icons-64x64.tar) is configured
multiple times in /etc/apt/sources.list:55 and
/etc/apt/sources.list.d/xenial-partner.list:4

It seems that you correctly executed the second part of the instructions, but missed the very first command.

Please execute the command

sudo rm /etc/apt/sources.list.d/xenial-partner.list

and then re-run

sudo apt-get update

Are there still warning and error messages?

On 14/10/18 21:22, Manfred Hampl wrote:
> Your question #674933 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/674933
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> It seems that you correctly executed the second part of the
> instructions, but missed the very first command.
>
> Please execute the command
>
> sudo rm /etc/apt/sources.list.d/xenial-partner.list
>
> and then re-run
>
> sudo apt-get update
>
> Are there still warning and error messages?
>
wayne@wayne-Aspire-5741:~$ sudo rm
/etc/apt/sources.list.d/xenial-partner.list
[sudo] password for wayne:
wayne@wayne-Aspire-5741:~$ sudo apt-get update
Hit:1 http://nz.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://nz.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:3 http://nz.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:5 http://archive.canonical.com/ubuntu xenial InRelease
Hit:6 http://ppa.launchpad.net/mjblenner/ppa-hal/ubuntu xenial InRelease
Hit:7 http://ppa.launchpad.net/pellesimon/ppa/ubuntu xenial InRelease
Reading package lists... Done

The output, but yet to check  the  graphic updater

Ok, your package management settings have been corrected and the command line update does not show warnings any more.

Your original problem (empty list of updates in the GUI in certain cases) will most probably still be there, and a solution will most probably require a program correction. I assume the developers are already working on it, see bug #1766217