The most likely cause of GPU artifacts and hard freezes on the AMD Framework 16 (with Radeon 780M iGPU) is a Panel Self-Refresh (PSR) / Panel Replay bug in the amdgpu driver. This issue tends to cause visual corruption at the display controller level without generating kernel errors in the logs.

Fix: Disable PSR via kernel parameter#

sudo rpm-ostree kargs --append-if-missing amdgpu.dcdebugmask=0x410

Then reboot.

Verify the fix was applied#

1. Confirm the kernel parameter is active:

cat /proc/cmdline | grep dcdebugmask

You should see amdgpu.dcdebugmask=0x410 in the output.

2. Check the module parameter value directly:

cat /sys/module/amdgpu/parameters/dcdebugmask

This should return 1040 (which is 0x410 in decimal).

Trade-off#

Disabling PSR means the display will refresh continuously rather than using power-saving self-refresh, resulting in slightly higher battery consumption.

Other things to check if the issue persists#

• BIOS: Update to version 04.03 or later, which addresses dGPU power management and stability issues. Enabling Gaming Mode in BIOS can also help.
• Kernel regression: Kernels in the 6.13–6.18.11 range had known AMD GPU fence timeout bugs. Update to 6.19.x if not already done.
• Mesa bug: Mesa 25.0.2+ has a commit causing artifacting/crashes on AMD hardware. Check with glxinfo | grep "OpenGL version".
• RAM: Some freezes are caused by overheating RAM (especially Kingston DDR5 above 55–58°C). Run Memtest86 to rule this out.
• Hardware: Reseat the dGPU interposer module if software fixes don't help.