Another finding: After hibernation and the computer start up. If I change to the following line in /etc/default/grub GRUB_CMDLINE_LINUX="nomodeset" I can restart the laptop without problem.
-- Re-installation needed after laptop hibernation https://bugs.launchpad.net/bugs/619450 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