Laptop Screen Glitching at 120 Hz Refresh Rate

After a deeper research, I found a workaround on the AMD GPU community reported issues repository in this thread.

To some things up, you can solve this by adding amdgpu.dcdebugmask=0x10 to the kernel parameter. To do that, follow the steps:

  1. sudo nano /etc/default/grub # Open the grub config file
  2. Append amdgpu.dcdebugmask=0x10 to the string literal on the GRUB_CMDLINE_LINUX line
  3. sudo grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg # Update grub with the new configs
  4. Reboot your machine

To draw more attention to this issue and get it fixed as soon as possible, I kindly ask you to give this issue a thumbs up on the AMD repository.

Warning: by disabling panel self refresh, you are likely to increase machine’s power consumption.