Did you ever do anything to fix this? I think I was/am experiencing the same thing, although I tried installing the 3.4 kernel and it seems to have helped - but sometimes on boot the login manager will fail to show.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1017045 Title: Xorg crashed with SIGABRT in raise() - 12.04 on amd64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1017045/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs