If you feel comfortable doing so, could you please attach the Compiz core dump for when this occurs? It may help give us some clues about what's going on.
Also, it appears you had the nvidia binary driver installed at one time and now you are using nouveau. I'm wondering if there is still some cruft left over from the nvidia driver causing this issue... Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448775 Title: Unable to login after upgrade from 14.10 to 15.04 possible XOrg crash To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1448775/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
