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.
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.