Fix screen flickering on Ubuntu

• Processor: AMD Ryzen™ 7 7840HS w/ Radeon™ 780M Graphics × 16

Modify the grub

Run

sudo vi /etc/default/grub

and add amdgpu.sg_display=0 in line GRUB_CMDLINE_LINUX_DEFAULT

For example:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.sg_display=0"

Then

sudo update-grub
reboot

Turn language into English, do not using Chinese.

After fixed the flicking problem through aforementioned method, I found it flickering again when swith the language into Chinese.

Reference

https://community.frame.work/t/tracking-screen-flashing-partially-white-on-framework-13-amd-ubuntu-22-04/40626?page=2
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2064906/