Hi everyone,
This is Clem from Linux Mint.
PSR
Until the bug is fixed upstream, the workaround for this issue is to disable PSR (Panel Self Refresh). You can’t do this in the BIOS so you’ll need to add amdgpu.dcdebugmask=0x12 to your kernel boot parameters.
As root, create a file in /etc/default/grub.d/99-amdgpu-fix.cfg with the following content:
GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT amdgpu.dcdebugmask=0x12"
Then update your grub menu and reboot:
sudo update-grub
sudo reboot
PSR is a power-saving optimization feature. Once disable you might get a slightly higher power consumption (shorter battery life), but you should have a stable system.
Upon reboot you can check that the kernel parameter appears with:
cat /proc/cmdline
Other workarounds
The PSR issue affects kernel 6.14 with Xorg and can be triggered randomly by anything that uses the GPU.
Disabling the workspace OSD or the desktop effects might help a tiny little bit but the issue can be triggered in many other ways.
Switching to Wayland avoids this bug, but not all desktops support it yet. Cinnamon works in Wayland but with a reduced set of features (no screensaver, keyboard layouts, input methods..).
Switching to kernel 6.8 GA/LTS leads to other issues. This kernel predates the Ryzen AI 300 series hardware, so it likely has incomplete or missing drivers for proper GPU, power management, and other hardware support.
Switching to kernel 6.11 shouldn’t be considered. There are Wifi dropout issues with this kernel and it no longer receives security updates.