*** This bug is a duplicate of bug 1610756 *** https://bugs.launchpad.net/bugs/1610756
Same error here on 64 Bit Ubuntu 14.04 LTS $ tail /var/log/dist-upgrade/main.log 2016-08-28 02:35:03,947 DEBUG running doUpdate() (showErrors=True) 2016-08-28 02:36:54,312 DEBUG openCache() 2016-08-28 02:36:54,313 DEBUG failed to SystemUnLock() (E:Nicht gesperrt) 2016-08-28 02:37:00,894 DEBUG /openCache(), new cache size 83476 2016-08-28 02:37:00,894 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop') 2016-08-28 02:37:15,051 ERROR Dist-upgrade failed: 'E:Fehler: Unterbrechungen durch pkgProblemResolver::Resolve hervorgerufen; dies könnte durch zurückgehaltene Pakete verursacht worden sein.' 2016-08-28 02:37:15,052 DEBUG abort called 2016-08-28 02:37:15,054 DEBUG openCache() 2016-08-28 02:37:20,982 DEBUG /openCache(), new cache size 74750 2016-08-28 02:37:20,983 DEBUG enabling apt cron job but all "apt-get update", "apt-get upgrade", "apt-get clean" works and the systems is up to date and not foreign package source is aktivated. I even switched proprietary graphics drivers to X server default. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1614229 Title: Upgrade 14.04 -> 16.04 stops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1614229/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs