"There are no errors shown in main.log"
Look again:
2020-09-20 14:56:32,417 ERROR Dist-upgrade failed: 'E:Unable to correct
problems, you have held broken packages.'
This is caused by having 3rd party PPA's and repositories installed (look at
your /etc/apt/sources.list.d directory). It looks like the oibaf PPA
specifically is causing the issue, so:
sudo apt-get install ppa-purge
sudo ppa-purge ppa:oibaf/graphics-drivers
I recommend you do the same with other bionic PPA's you have installed,
and also remove the old .list files (ones from xenial and debian
stable).
After you clean up your sources, try upgrading again. Please let us know
whether upgrade succeeds or fails.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Incomplete
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1896384
Title:
Error upgrading distro
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1896384/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
