The problem appears after a few minutes, without any particular reason. I will try to deactivate the nVidia driver and see if the problem appears again.
-- X server stuck at 100%, screen frozen, critical, recovery: manual power off https://bugs.launchpad.net/bugs/589352 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs