I cannot shut down my laptop, it goes into suspend modus. After having shut down I even see the logo of Lenovo on the display as if it would reboot and go into suspend modus. The shutdown button LED is blinking. If I close it and open it again it will turn on.
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch Distributor ID: Ubuntu Description: Ubuntu 18.04 LTS Release: 18.04 Codename: bionic
was changed to
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force"
my laptop is a thinkpad E480, I don't know whether the information about graphic card is important
VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)