This guide will help gather information that would be useful when creating a single, new question at
In
order to gather essential troubleshooting information about your
apt-get or aptitude or synaptic package manager in Ubuntu, please follow
this procedure.
Step 1 First install a supported version of Ubuntu
The only supported releases of Ubuntu are the ones that are NOT End of Life (EOL) in the following table:
Step 2 Switch to "Main Server" using Software Sources
First switch from the regional server (US, UK, Swiss, etc...) to the "Main Server" using the Software Sources window
You
can open up the Software Sources window by running the Update Manager.
If you are using the Gnome Classic desktop it can be found in the menu
(System > Administration > Update Manager). If you are Using
Unity click the top icon in the dash and search for "update manager". In
the update manager click on the Settings button at the lower-left
corner of the window, and entering your password if prompted to do so.
See here for details and a screenshot of the main tab of the Software Sources window:
If
you are unable to start "Update Manager" or unable to access Software
Sources or Ubuntu Software Center, please skip step 1 and step 2 and
proceed to step 3.
Step 3 Disable all PPA repositories
Open "Ubuntu Software Center" - Edit Menu --- Select "Software Sources...", enter your password
Select tab "Other Software"
From
the "Other Software" tab, disable all PPA repositories, leaving only
the official Ubuntu repositories active. Enabling too many PPA
repositories (which are non-official) can cause your package manager to
become unstable. If you do decide to re-enable such a PPA repository, I
strongly suggest only enabling ONE PPA repository at a time for
stability reasons, not several at the same time.
Step 4 Close all open programs
VERY
IMPORTANT! Please make sure to close all open programs, including all
package managers like Synaptic, Update Manager, Software Center,
Add/remove programs, etc ... No other package manager should be running
while running the commands below.
If you are using the Gnome interface, open
the Terminal console via "Applications->Accessories->Terminal"
If you are using the Unity interface, the easiest way to open the Terminal is to use the 'search' function on the dash. Or
you can click on the 'More Apps' button, click on the 'See more
results' by the installed section, and find it in that list of
applications. A third way,
available after you click on the 'More Apps' button, is to go to the
search bar, and see that the far right end of it says 'All
Applications'. You then click on that, and you'll see the full list.
Then you can go to Accessories > Terminal after that.
So the methods in Unity are:
Press CTRL-ALT-T key combination.
Dash > Search for Terminal
Dash > More Apps > 'See More Results' > Terminal
Dash > More Apps > Accessories > Terminal
Step 6 List of Terminal commands to execute and send to Launchpad Answers forum
Tip:
If you have a wheel mouse or 3 button mouse you do not need to type
commands into the Terminal. Highlight each command on the page using the
mouse. Move your cursor anywhere in the Terminal and press the wheel or
middle button. Automatic Copy and paste! No spelling mistakes! No
Typos! No other errors!
ubuntu-support-status
cat /etc/dpkg/dpkg.cfg.d/multiarch
dpkg --print-foreign-architectures
sudo grep -R proxy /etc/apt/*
grep proxy /etc/environment
echo $http_proxy
echo $ftp_proxy
grep proxy /etc/bash.bashrc
grep proxy ~/.bashrc
cat /etc/apt/apt.conf
sudo fuser -vvv /var/lib/dpkg/lock
sudo fuser -vvv /var/cache/apt/archives/lock
cat /etc/lsb-release
uname -a
sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock
sudo cp -arf /var/lib/dpkg /var/lib/dpkg.backup
sudo mv /var/lib/dpkg/status /var/lib/dpkg/status-bad
sudo cp /var/lib/dpkg/status-old /var/lib/dpkg/status || sudo cp /var/backups/apt.extended_states.0 /var/lib/dpkg/status
sudo mv /var/lib/dpkg/available /var/lib/dpkg/available-bad
sudo cp /var/lib/dpkg/available-old /var/lib/dpkg/available
sudo rm -rf /var/lib/dpkg/updates/*
sudo rm -rf /var/lib/apt/lists
sudo rm /var/cache/apt/*.bin
sudo mkdir /var/lib/apt/lists
sudo mkdir /var/lib/apt/lists/partial
LANG=C;sudo apt-get clean
LANG=C;sudo apt-get autoclean
sudo dpkg --configure -a
sudo dpkg --clear-avail
LANG=C;sudo apt-get -f install
LANG=C;sudo apt-get --fix-missing install
LANG=C;sudo apt-get --purge autoremove
LANG=C;sudo apt-get --fix-missing update -o APT::Cache-Limit=100000000
LANG=C;sudo apt-get update -o APT::Cache-Limit=100000000 && sudo apt-get dist-upgrade
find /etc/apt -name '*.list' -exec bash -c 'echo -e "\n$1\n"; cat -n "$1"' _ '{}' \;
sudo dpkg --audit
Step 7 Please send us the Terminal output
The troubleshooters at Launchpad need to see the full Terminal output from running the previous list of diagnostic commands.
Step 8 Error occurs while trying to remove or upgrade a specific software package
If
a package manager error occurs while trying to remove or upgrade a
specific software package, please try the following workaround
procedures:
The troubleshooters at Launchpad need to see the full Terminal output from running the above command.
If
the previous apt-get update command returned any "404 Not Found" errors
for certain Launchpad PPA's, then please open Software Sources via dash
or System Settings and unmark/deactivate those failed Launchpad PPA's
in Software Sources.
Step 9
If
you are using the 64-bit edition of Ubuntu and if you are still
encountering issues when trying to install certain Ubuntu packages, I
suggest executing the following commands:
sudo dpkg --add-architecture i386
sudo apt-get update
Step 10 Ubuntu Software Center fails to open
If the Ubuntu Software Center fails to open, then please execute these Terminal commands:
sudo rm /usr/lib/python*/dist-packages/__pycache__/*pyc
sudo apt-get install --reinstall python3-gi
sudo apt-get purge software-center
rm -rf ~/.cache/software-center
rm -rf ~/.config/software-center
rm -rf ~/.cache/update-manager-core
sudo rm /var/lib/apt-xapian-index/cataloged_times.p
sudo rm /var/lib/apt-xapian-index/values
sudo update-apt-xapian-index --verbose --force
sudo update-apt-xapian-index --force
sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get install software-center ubuntu-desktop
sudo dpkg-reconfigure software-center --force
sudo update-software-center
sudo apt-get install --reinstall software-center
Then reboot and retest.
Sources:
Step 11 You are using a proxy server to connect to the Internet
If you are using a proxy server, please make sure the following changes have been made in Ubuntu:
1) put the following configuration lines in the /etc/bash.bashrc file:
export http_proxy=http://<username>:<password>@<proxy>:<port>/
export https_proxy=https://<username>:<password>@<proxy>:<port>/
export ftp_proxy=ftp://<username>:<password>@<proxy>:<port>/
but REPLACING the values for username, password, proxy and port number, of course.
You can edit the /etc/bash.bashrc file using this command:
gksudo gedit /etc/bash.bashrc
2) put the following configuration lines in the /etc/environment file:
http_proxy=http://<username>:<password>@<proxy>:<port>/
https_proxy=https://<username>:<password>@<proxy>:<port>/
ftp_proxy=ftp://<username>:<password>@<proxy>:<port>/
but REPLACING the values for username, password, proxy and port number, of course.
You can edit the /etc/environment file using this command:
gksudo gedit /etc/environment
3) put the following configuration lines in a new /etc/apt/apt.conf.d/80proxy file:
Acquire::http::proxy "http://<username>:<password>@<proxy>:<port>/";
Acquire::ftp::proxy "ftp://<username>:<password>@<proxy>:<port>/";
Acquire::https::proxy "https://<username>:<password>@<proxy>:<port>/";
but REPLACING the values for username, password, proxy and port number, of course.
You can edit the /etc/apt/apt.conf.d/80proxy file using this command:
gksudo gedit /etc/apt/apt.conf.d/80proxy
This Article is from the source ::
https://help.ubuntu.com/community/PackageManagerTroubleshootingProcedure
