Cannot upgrade ubuntu 19.04 for a time
728
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
80794
Ubuntu 18.04 stuck at upgrading linux-header
3275
I can't seem to install Ubuntu 16.04.2
140893
Error when using apt-get update
11166
"Require Installation Of Untrusted Packages" while upgrading with the update manager
36696
Unmet dependencies unable to fix
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
76905
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
20751
Problem upgrading Ubuntu 9.10
24165
Upgrade to version newer than repositories
46424
Cannot update software center repositories
19583
Can't upgrade due to low disk space on /boot
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
114305
On really old Ubuntu 6.06 - How to upgrade
64509
Can't update from official repositories [Error 409]
80233
Upgrade to 20.04 from 19.10 isn't available
58979
How can I upgrade Ubuntu LTS to the next one offline?