Walter, thanks for the reply! The issue is still present for my system, built upon on a stable, yet customized version of Lubuntu 16.04.
> I would suggest filing a new bug, again with `ubuntu-bug ubuntu- release-upgrader-core`. Not sure I have done that before I stumbled about this issue here. Will definitely repeat this step just in case! Further I dug a bit into the logs and actually found something that might point to the problem here: --- from dist-upgrade log --- … 2018-05-20 13:10:46,069 DEBUG running doUpdate() (showErrors=True) 2018-05-20 13:11:09,777 DEBUG openCache() 2018-05-20 13:11:09,777 DEBUG failed to SystemUnLock() (E:Nicht gesperrt) 2018-05-20 13:11:10,286 DEBUG /openCache(), new cache size 90600 2018-05-20 13:11:10,287 DEBUG need_server_mode(): run in 'desktop' mode, (because of key deps for 'lubuntu-core') 2018-05-20 13:11:11,965 ERROR Dist-upgrade failed: 'E:Fehler: Unterbrechungen durch pkgProblemResolver::Resolve hervorgerufen; dies könnte durch zurückgehaltene Pakete verursacht worden sein.' 2018-05-20 13:11:11,978 DEBUG abort called 2018-05-20 13:11:11,983 DEBUG openCache() 2018-05-20 13:11:11,983 DEBUG failed to SystemUnLock() (E:Nicht gesperrt) 2018-05-20 13:11:13,666 DEBUG /openCache(), new cache size 88071 --- log ends here --- After filing the bug, I am going to retry the update in 'server' mode or shouldn't I? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769184 Title: I can't seem to upgrade to Ubuntu 18.04 from 17.10. It can't calculate changes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1769184/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
