*** This bug is a duplicate of bug 925048 *** https://bugs.launchpad.net/bugs/925048
The lockup is just confirmation it died. However it doesn't say why. Can you post the result of running the command 'dmesg' after the lockup? ** This bug has been marked a duplicate of bug 925048 [GTX 580] X seems to hang a login prompt -- PFIFO errors in dmesg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990411 Title: Ubuntu 12.04 nouveau lockup with GTX580 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/990411/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs