ACPI error after installing Ubuntu 22.04

You can get rid of those ACPI Error messages by

1. Open ‘/etc/default/grub’ in an editor with root access. In your case I believe Ubuntu uses gedit as it’s text editor

Code:

sudo gedit /etc/default/grub

1. The line with ‘GRUB_CMDLINE_LINUX_DEFAULT’, add the loglevel=3 part. The original looks like

GRUB_CMDLINE_LINUX_DEFAULT=‘quiet splash’

Change it to this:

Code:

GRUB_CMDLINE_LINUX_DEFAULT='quiet splash loglevel=3'

Then save the changes and close it, now open a terminal and run:

Code:

sudo update-grub

Reboot and see the results.

Link:
https://www.linux.org/threads/acpi-error-after-installing-ubuntu-22-04.40993/