Comment 5 for bug 1635236

So i am using he notebook from several days what i saw:

Other people in a forum in my language have the same issue with the same model:

Changing the /etc/default/grub and the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" in GRUB_CMDLINE_LINUX_DEFAULT="" makes the reboot working, i am using the pc now from days and in this way the reboot works from until.

if i re edit the file like GRUB_CMDLINE_LINUX_DEFAULT="splash" the reboot begins again not working and then after the reedit it dont works even deleting all and leaving ""

i had to reinstall the enteire system and edit once and leave it

those are my findings