I read on a Ubuntu/Gnome website on the internet a way to get a free proxy of Gnome, all was written in steps... but what I tried did not work in my case. So I tried to delete what was done, until Synaptic & the Download Center came with the same error... there was no proxy so download/installations were not possible.
I've searched the web to find a solution of the apt-get proxy error. I didn't know that I had a proxy (it's better to give that information), than all my energy to get in a search of a proxy, I even had than not this error too.
Anyway on internet there are enough strange ideas to get to the right solution, most times for a server, but I have a desktop-version. And I could not find in my computer and on the internet where & what my proxy-address is? In another forum was listed that the AT/@ may not written in the apt.conf line, so for me it's all not to understandable
Acquire::http::Proxy "http://username:password@proxyaddress:port";
Acquire::ftp::Proxy "ftp://username:password@proxyproxyaddress:port";
I made the whole list with terminal commands [https://help.ubuntu.com/community/PackageManagerTroubleshootingProcedure], below listed:
eglefino@eglefinoPC:~$ ubuntu-support-status
Traceback (most recent call last):
File "/usr/bin/ubuntu-support-status", line 5, in <module>
import apt
File "/usr/lib/python3/dist-packages/apt/__init__.py", line 34, in <module>
apt_pkg.init_config()
SystemError: E:Syntax error /etc/apt/apt.conf:1: Extra junk after value
eglefino@eglefinoPC:~$ cat /etc/dpkg/dpkg.cfg.d/multiarch
cat: /etc/dpkg/dpkg.cfg.d/multiarch: Bestand of map bestaat niet
eglefino@eglefinoPC:~$ dpkg --print-foreign-architectures
i386
eglefino@eglefinoPC:~$ sudo grep -R proxy /etc/apt/*
[sudo] password for eglefino:
/etc/apt/apt.conf:Acquire::http:: proxy "false";
eglefino@eglefinoPC:~$ grep proxy /etc/environment
http_proxy="http://proxy:8080/"
eglefino@eglefinoPC:~$ echo $http_proxy
http://proxy:8080/
eglefino@eglefinoPC:~$ echo $ftp_proxy
eglefino@eglefinoPC:~$ grep proxy /etc/bash.bashrc
eglefino@eglefinoPC:~$ grep proxy ~/.bashrc
eglefino@eglefinoPC:~$ cat /etc/apt/apt.conf
Acquire::http:: proxy "false";
eglefino@eglefinoPC:~$ sudo fuser -vvv /var/lib/dpkg/lock
eglefino@eglefinoPC:~$ sudo fuser -vvv /var/cache/apt/archives/lock
eglefino@eglefinoPC:~$ uname -a
Linux eglefinoPC 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
eglefino@eglefinoPC:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"
eglefino@eglefinoPC:~$ sudo rm /var/lib/apt/lists/lock
eglefino@eglefinoPC:~$ sudo rm /var/cache/apt/archives/lock
eglefino@eglefinoPC:~$ sudo rm /var/lib/dpkg/lock
eglefino@eglefinoPC:~$ sudo touch /var/lib/dpkg/lock
eglefino@eglefinoPC:~$ sudo cp -arf /var/lib/dpkg /var/lib/dpkg.backup
eglefino@eglefinoPC:~$ sudo mv /var/lib/dpkg/status /var/lib/dpkg/status-bad
eglefino@eglefinoPC:~$ sudo cp /var/lib/dpkg/status-old /var/lib/dpkg/status || sudo cp /var/backups/apt.extended_states.0 /var/lib/dpkg/status
eglefino@eglefinoPC:~$ sudo mv /var/lib/dpkg/available /var/lib/dpkg/available-bad
eglefino@eglefinoPC:~$ sudo cp /var/lib/dpkg/available-old /var/lib/dpkg/available
eglefino@eglefinoPC:~$ sudo rm -rf /var/lib/dpkg/updates/*
eglefino@eglefinoPC:~$ sudo rm -rf /var/lib/apt/lists
eglefino@eglefinoPC:~$ sudo rm /var/cache/apt/*.bin
eglefino@eglefinoPC:~$ sudo mkdir /var/lib/apt/lists
eglefino@eglefinoPC:~$ sudo mkdir /var/lib/apt/lists/partial
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get clean
E: Syntax error /etc/apt/apt.conf:1: Extra junk after value
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get clean
E: Syntax error /etc/apt/apt.conf:1: Extra junk after value
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get --purge autoremove
E: Syntax error /etc/apt/apt.conf:1: Extra junk after value
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get --fix-missing update -o APT::Cache-Limit=100000000
E: Syntax error /etc/apt/apt.conf:1: Extra junk after value
eglefino@eglefinoPC:~$ sudo dpkg --configure -a
eglefino@eglefinoPC:~$ sudo dpkg --clear-avail
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get --fix-missing install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get update -o APT::Cache-Limit=100000000 && sudo apt-get dist-upgrade
Ign http://nl.archive.ubuntu.com trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://nl.archive.ubuntu.com trusty-updates InRelease
Ign http://security.ubuntu.com trusty-security InRelease
Ign http://archive.canonical.com trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://nl.archive.ubuntu.com trusty-backports InRelease
Get:1 http://archive.canonical.com trusty Release.gpg [933 B]
Get:2 http://security.ubuntu.com trusty-security Release.gpg [933 B]
Get:3 http://ppa.launchpad.net trusty Release.gpg [316 B]
Get:4 http://nl.archive.ubuntu.com trusty Release.gpg [933 B]
Get:5 http://archive.canonical.com trusty Release [8257 B]
Get:6 http://ppa.launchpad.net trusty Release.gpg [316 B]
Get:7 http://security.ubuntu.com trusty-security Release [58.5 kB]
Get:8 http://nl.archive.ubuntu.com trusty-updates Release.gpg [933 B]
Get:9 http://nl.archive.ubuntu.com trusty-backports Release.gpg [933 B]
Get:10 http://ppa.launchpad.net trusty Release [14.1 kB]
Get:11 http://deb.opera.com stable InRelease [1963 B]
Get:12 http://archive.canonical.com trusty/partner Sources [1884 B]
Get:13 http://nl.archive.ubuntu.com trusty Release [58.5 kB]
Get:14 http://archive.canonical.com trusty/partner amd64 Packages [2198 B]
Get:15 http://deb.opera.com stable/non-free amd64 Packages [931 B]
Get:16 http://ppa.launchpad.net trusty Release [14.0 kB]
Get:17 http://nl.archive.ubuntu.com trusty-updates Release [58.5 kB]
Get:18 http://archive.canonical.com trusty/partner i386 Packages [3138 B]
Get:19 http://deb.opera.com stable/non-free i386 Packages [933 B]
Get:20 http://security.ubuntu.com trusty-security/main Sources [2642 B]
Get:21 http://ppa.launchpad.net trusty/main amd64 Packages [22.6 kB]
Get:22 http://nl.archive.ubuntu.com trusty-backports Release [58.6 kB]
Get:23 http://security.ubuntu.com trusty-security/restricted Sources [14 B]
Get:24 http://ppa.launchpad.net trusty/main i386 Packages [22.6 kB]
Ign http://deb.opera.com stable/non-free Translation-en
Get:25 http://security.ubuntu.com trusty-security/universe Sources [14 B]
Get:26 http://nl.archive.ubuntu.com trusty/main Sources [1064 kB]
Get:27 http://security.ubuntu.com trusty-security/multiverse Sources [14 B]
Ign http://archive.canonical.com trusty/partner Translation-en
Get:28 http://security.ubuntu.com trusty-security/main amd64 Packages [3866 B]
Get:29 http://security.ubuntu.com trusty-security/restricted amd64 Packages [14 B]
Get:30 http://security.ubuntu.com trusty-security/universe amd64 Packages [1199 B]
Ign http://ppa.launchpad.net trusty/main Translation-en
Get:31 http://security.ubuntu.com trusty-security/multiverse amd64 Packages [14 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:32 http://security.ubuntu.com trusty-security/main i386 Packages [3902 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:33 http://security.ubuntu.com trusty-security/restricted i386 Packages [14 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:34 http://security.ubuntu.com trusty-security/universe i386 Packages [1206 B]
Get:35 http://security.ubuntu.com trusty-security/multiverse i386 Packages [14 B]
Get:36 http://nl.archive.ubuntu.com trusty/restricted Sources [5433 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:37 http://nl.archive.ubuntu.com trusty/universe Sources [6399 kB]
Get:38 http://security.ubuntu.com trusty-security/main Translation-en [2355 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:39 http://security.ubuntu.com trusty-security/multiverse Translation-en [14 B]
Get:40 http://security.ubuntu.com trusty-security/restricted Translation-en [14 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:41 http://security.ubuntu.com trusty-security/universe Translation-en [717 B]
Ign https://private-ppa.launchpad.net trusty InRelease
Get:42 http://nl.archive.ubuntu.com trusty/multiverse Sources [174 kB]
Get:43 http://nl.archive.ubuntu.com trusty/main amd64 Packages [1350 kB]
Get:44 http://nl.archive.ubuntu.com trusty/restricted amd64 Packages [13.0 kB]
Get:45 http://nl.archive.ubuntu.com trusty/universe amd64 Packages [5859 kB]
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Get:46 http://nl.archive.ubuntu.com trusty/multiverse amd64 Packages [132 kB]
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Get:47 http://nl.archive.ubuntu.com trusty/main i386 Packages [1348 kB]
Get:48 http://nl.archive.ubuntu.com trusty/restricted i386 Packages [13.4 kB]
Get:49 http://nl.archive.ubuntu.com trusty/universe i386 Packages [5866 kB]
Get:50 http://nl.archive.ubuntu.com trusty/multiverse i386 Packages [134 kB]
Get:51 http://nl.archive.ubuntu.com trusty/main Translation-en [762 kB]
Get:52 http://nl.archive.ubuntu.com trusty/multiverse Translation-en [102 kB]
Get:53 http://nl.archive.ubuntu.com trusty/restricted Translation-en [3457 B]
Get:54 http://nl.archive.ubuntu.com trusty/universe Translation-en [4088 kB]
Get:55 http://nl.archive.ubuntu.com trusty-updates/main Sources [6548 B]
Get:56 http://nl.archive.ubuntu.com trusty-updates/restricted Sources [14 B]
Get:57 http://nl.archive.ubuntu.com trusty-updates/universe Sources [1687 B]
Get:58 http://nl.archive.ubuntu.com trusty-updates/multiverse Sources [1790 B]
Get:59 http://nl.archive.ubuntu.com trusty-updates/main amd64 Packages [14.0 kB]
Get:60 http://nl.archive.ubuntu.com trusty-updates/restricted amd64 Packages [14 B]
Get:61 http://nl.archive.ubuntu.com trusty-updates/universe amd64 Packages [4140 B]
Get:62 http://nl.archive.ubuntu.com trusty-updates/multiverse amd64 Packages [6362 B]
Get:63 http://nl.archive.ubuntu.com trusty-updates/main i386 Packages [12.6 kB]
Get:64 http://nl.archive.ubuntu.com trusty-updates/restricted i386 Packages [14 B]
Get:65 http://nl.archive.ubuntu.com trusty-updates/universe i386 Packages [4165 B]
Get:66 http://nl.archive.ubuntu.com trusty-updates/multiverse i386 Packages [6386 B]
Get:67 http://nl.archive.ubuntu.com trusty-updates/main Translation-en [6921 B]
Get:68 http://nl.archive.ubuntu.com trusty-updates/multiverse Translation-en [3457 B]
Get:69 http://nl.archive.ubuntu.com trusty-updates/restricted Translation-en [14 B]
Get:70 http://nl.archive.ubuntu.com trusty-updates/universe Translation-en [2241 B]
Get:71 http://nl.archive.ubuntu.com trusty-backports/main Sources [14 B]
Get:72 http://nl.archive.ubuntu.com trusty-backports/restricted Sources [14 B]
Get:73 http://nl.archive.ubuntu.com trusty-backports/universe Sources [14 B]
Get:74 http://nl.archive.ubuntu.com trusty-backports/multiverse Sources [14 B]
Get:75 http://nl.archive.ubuntu.com trusty-backports/main amd64 Packages [14 B]
Get:76 http://nl.archive.ubuntu.com trusty-backports/restricted amd64 Packages [14 B]
Get:77 http://nl.archive.ubuntu.com trusty-backports/universe amd64 Packages [14 B]
Get:78 http://nl.archive.ubuntu.com trusty-backports/multiverse amd64 Packages [14 B]
Get:79 http://nl.archive.ubuntu.com trusty-backports/main i386 Packages [14 B]
Get:80 http://nl.archive.ubuntu.com trusty-backports/restricted i386 Packages [14 B]
Get:81 http://nl.archive.ubuntu.com trusty-backports/universe i386 Packages [14 B]
Get:82 http://nl.archive.ubuntu.com trusty-backports/multiverse i386 Packages [14 B]
Get:83 http://nl.archive.ubuntu.com trusty-backports/main Translation-en [14 B]
Get:84 http://nl.archive.ubuntu.com trusty-backports/multiverse Translation-en [14 B]
Get:85 http://nl.archive.ubuntu.com trusty-backports/restricted Translation-en [14 B]
Get:86 http://nl.archive.ubuntu.com trusty-backports/universe Translation-en [14 B]
Fetched 27.8 MB in 12s (2220 kB/s)
W: Failed to fetch http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu/dists/trusty/Release Unable to find expected entry 'deb-src/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)
E: Some index files failed to download. They have been ignored, or old ones used instead.
eglefino@eglefinoPC:~$ LANG=C;sudo apt-get update -o APT::Cache-Limit=100000000 && sudo apt-get dist-upgrade
Ign http://nl.archive.ubuntu.com trusty InRelease
Hit http://deb.opera.com stable InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://archive.canonical.com trusty InRelease
Ign http://nl.archive.ubuntu.com trusty-updates InRelease
Ign http://security.ubuntu.com trusty-security InRelease
Ign http://nl.archive.ubuntu.com trusty-backports InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://deb.opera.com stable/non-free amd64 Packages
Hit http://archive.canonical.com trusty Release.gpg
Hit http://security.ubuntu.com trusty-security Release.gpg
Hit http://deb.opera.com stable/non-free i386 Packages
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty Release.gpg
Hit http://archive.canonical.com trusty Release
Hit http://security.ubuntu.com trusty-security Release
Hit http://nl.archive.ubuntu.com trusty-updates Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty-backports Release.gpg
Hit http://archive.canonical.com trusty/partner Sources
Hit http://ppa.launchpad.net trusty Release
Hit http://security.ubuntu.com trusty-security/main Sources
Hit http://nl.archive.ubuntu.com trusty Release
Hit http://archive.canonical.com trusty/partner amd64 Packages
Hit http://ppa.launchpad.net trusty Release
Ign http://deb.opera.com stable/non-free Translation-en
Hit http://nl.archive.ubuntu.com trusty-updates Release
Hit http://security.ubuntu.com trusty-security/restricted Sources
Hit http://archive.canonical.com trusty/partner i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports Release
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe Sources
Hit http://nl.archive.ubuntu.com trusty/main Sources
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://security.ubuntu.com trusty-security/multiverse Sources
Hit http://nl.archive.ubuntu.com trusty/restricted Sources
Hit http://nl.archive.ubuntu.com trusty/universe Sources
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Hit http://nl.archive.ubuntu.com trusty/multiverse Sources
Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages
Hit http://nl.archive.ubuntu.com trusty/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages
Ign http://archive.canonical.com trusty/partner Translation-en
Hit http://nl.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages
Hit http://nl.archive.ubuntu.com trusty/universe amd64 Packages
Ign http://ppa.launchpad.net trusty/main Translation-en
Hit http://nl.archive.ubuntu.com trusty/multiverse amd64 Packages
Hit http://security.ubuntu.com trusty-security/main i386 Packages
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://nl.archive.ubuntu.com trusty/main i386 Packages
Hit http://security.ubuntu.com trusty-security/restricted i386 Packages
Hit http://nl.archive.ubuntu.com trusty/restricted i386 Packages
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://security.ubuntu.com trusty-security/universe i386 Packages
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://security.ubuntu.com trusty-security/main Translation-en
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://nl.archive.ubuntu.com trusty/universe i386 Packages
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Hit http://nl.archive.ubuntu.com trusty/multiverse i386 Packages
Ign https://private-ppa.launchpad.net trusty InRelease
Hit http://nl.archive.ubuntu.com trusty/main Translation-en
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty/multiverse Translation-en
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty/restricted Translation-en
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty/universe Translation-en
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://nl.archive.ubuntu.com trusty-updates/main Sources
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty-updates/restricted Sources
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty-updates/universe Sources
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty-updates/multiverse Sources
Hit http://nl.archive.ubuntu.com trusty-updates/main amd64 Packages
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit http://nl.archive.ubuntu.com trusty-updates/restricted amd64 Packages
Hit https://private-ppa.launchpad.net trusty Release
Hit http://nl.archive.ubuntu.com trusty-updates/universe amd64 Packages
Hit https://private-ppa.launchpad.net trusty Release
Hit http://nl.archive.ubuntu.com trusty-updates/multiverse amd64 Packages
Hit https://private-ppa.launchpad.net trusty Release
Hit https://private-ppa.launchpad.net trusty Release
Hit http://nl.archive.ubuntu.com trusty-updates/main i386 Packages
Hit https://private-ppa.launchpad.net trusty Release
Hit https://private-ppa.launchpad.net trusty Release
Hit http://nl.archive.ubuntu.com trusty-updates/restricted i386 Packages
Hit https://private-ppa.launchpad.net trusty Release
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit http://nl.archive.ubuntu.com trusty-updates/universe i386 Packages
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-updates/multiverse i386 Packages
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://nl.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit http://nl.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://nl.archive.ubuntu.com trusty-backports/main Sources
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/restricted Sources
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/universe Sources
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://nl.archive.ubuntu.com trusty-backports/main amd64 Packages
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/restricted amd64 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/universe amd64 Packages
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/multiverse amd64 Packages
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/main i386 Packages
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://nl.archive.ubuntu.com trusty-backports/main Translation-en
Hit http://nl.archive.ubuntu.com trusty-backports/multiverse Translation-en
Hit http://nl.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://nl.archive.ubuntu.com trusty-backports/universe Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign https://private-ppa.launchpad.net trusty/main Translation-en
W: Failed to fetch http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu/dists/trusty/Release Unable to find expected entry 'deb-src/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)
E: Some index files failed to download. They have been ignored, or old ones used instead.
eglefino@eglefinoPC:~$
--->I changed in a separate tab of the terminal the only line written in the apt.conf: proxy "false" , because all commands could not delete or change this part of the line !!
eglefino@eglefinoPC:~$ sudo gedit /etc/apt/apt.conf
[sudo] password for eglefino:
(gedit:28677): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
(gedit:28677): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
eglefino@eglefinoPC:~$
----> From the "Other Software" tab, I disabled the PPA repository of http://ppa.launchpad.net/danielrichter2007/grub-customizer/
I shall wait until an answer will come what to do, sorry if there are language errors, it's not my language [I learned that at school for the last time in 1972].
I started with Ubuntu in January 2012, I came from the Atari/Commodore64 period from circa 1982, all Windows versions till 2012