*** This bug is a duplicate of bug 1013490 *** https://bugs.launchpad.net/bugs/1013490
Public bug reported: Hello, I am experiencing many different problems after upgrading to Precise, or at least what I thought was precise. The Unity interface is barely functional in my opinion (I like the taskbar) so I am attempting to convert back to Gnome. When I attempt to reinstall GNOME: #1 The following packages have unmet dependencies: gnome: Depends: gnome-core (= 1:3.0+6ubuntu3) but 1:3.0+6ubuntu3 is to be installed I have been running in circles trying to get gnome reinstalled. There are so many bugs on my computer now I can't do anything. #2 For some reason (I did NOT do this intentionally) I am running a development version of 12.10. This may be the source of my problems. I did this: 1) sudo sed -i 's/quantal/precise/g' /etc/apt/sources.list 2) sudo apt-get update && sudo apt-get dist-upgrade 3) sudo apt-get update 4) sudo apt-get upgrade This link http://askubuntu.com/questions/49869/how-to-roll-back-ubuntu- to-a-previous-version was not helpful. ProblemType: Crash DistroRelease: Ubuntu 12.10 Package: update-manager 1:0.163 ProcVersionSignature: Ubuntu 3.5.0-1.1-generic 3.5.0-rc3 Uname: Linux 3.5.0-1-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.2.3-0ubuntu6 Architecture: amd64 Date: Thu Jun 21 04:34:30 2012 DuplicateOf: https://bugs.launchpad.net/bugs/1013490 ExecutablePath: /usr/bin/update-manager GsettingsChanges: InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) InterpreterPath: /usr/bin/python3.2mu PackageArchitecture: all ProcCmdline: /usr/bin/python3.2 /usr/bin/update-manager --dist-upgrade ProcCwd: /home/david ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash TERM=unknown PythonArgs: ['/usr/bin/update-manager', '--dist-upgrade'] SourcePackage: update-manager Title: update-manager crashed with ImportError in /usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeQuirks.py: No module named plugincore.manager UpgradeStatus: Upgraded to quantal on 2012-06-21 (0 days ago) UserGroups: ** Affects: update-manager (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-crash dist-upgrade quantal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1015950 Title: update-manager crashed with ImportError in /usr/lib/python3/dist- packages/DistUpgrade/DistUpgradeQuirks.py: No module named plugincore.manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1015950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs