I've tried to recreate this by installing nvidia-libopencl1-304 and
virt-viewer on Ubuntu 17.04 to ensure my upgrade to 17.10 will fail and
the upgrade process failed in the same way that is show in the
Mainlog.txt file attached to this bug report and the bug which was
linked to in the description.
2017-12-14 10:29:06,946 DEBUG need_server_mode(): run in 'desktop' mode,
(because of pkg 'ubuntu-desktop')
2017-12-14 10:29:07,299 ERROR Dist-upgrade failed: 'E:Error,
pkgProblemResolver::Resolve generated breaks, this may be caused by held
packages.'
2017-12-14 10:29:07,301 DEBUG abort called
2017-12-14 10:29:07,302 DEBUG openCache()
2017-12-14 10:29:07,302 DEBUG failed to SystemUnLock() (E:Not locked)
2017-12-14 10:29:09,558 DEBUG /openCache(), new cache size 87326
However, my /etc/apt/sources.list file is properly restored whether I
use my mirror of the Ubuntu archive or an official mirror fo the
archive. Could you provide some more details as to how this situation
came about? Its quite serious and we'd like to sort it out.
** Changed in: ubuntu-release-upgrader (Ubuntu Bionic)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1737445
Title:
release upgrader doesn't re-enable updates after failure
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