Apparently, it is quite common for AMD GPUs to show screen artifacts on Linux.
Most of the times it is related to power management settings. These settings
can be adjusted via amdgpu kernel module options. The parameters are different
for different GPUs. In my case, I have a Dell laptop with AMD Radeon 890M GPU.
To fix the screen artifacts, run the following commands:
sudo grubby --update-kernel=ALL --args="amdgpu.dcdebugmask=0x410"
Reboot your system.
Verify your GPU:
/sbin/lspci | grep -e VGA
Make sure you:
Make sure you system is up to date (reboot if something was installed):
sudo dnf update -y
Install nvidia driver:
sudo dnf install akmod-nvidia
sudo dnf install xorg-x11-drv-nvidia-cuda
Wait until kernel module is compiled.
Enable video acceleration and some extras:
sudo dnf install vdpauinfo libva-vdpau-driver libva-utils xorg-x11-drv-nvidia-cuda-libs xorg-x11-drv-nvidia-cuda
Reboot system.
Verify that nouveau driver is disabled:
lsmod |grep nouveau
Top-like application to monitor performance of intel GPU:
sudo dnf install igt-gpu-tools
sudo intel_gpu_top
Playing 4k video sample on youtube (intel i3-8100T):
intel-gpu-top: Intel Coffeelake (Gen9) @ /dev/dri/card0 - 1063/1083 MHz; 1% RC6; 7.35/19.18 W; 467 irqs/s
IMC reads: 6889 MiB/s
IMC writes: 3901 MiB/s
ENGINE BUSY MI_SEMA MI_WAIT
Render/3D/0 98.29% |██████████████████████████████████▍| 0% 0%
Blitter/0 0.00% | | 0% 0%
Video/0 0.00% | | 0% 0%
VideoEnhance/0 0.00% | | 0% 0%
Playing the same video in 1080p (intel i3-8100T)::
intel-gpu-top: Intel Coffeelake (Gen9) @ /dev/dri/card0 - 591/ 591 MHz; 30% RC6; 3.06/ 6.47 W; 474 irqs/s
IMC reads: 4058 MiB/s
IMC writes: 2654 MiB/s
ENGINE BUSY MI_SEMA MI_WAIT
Render/3D/0 55.64% |███████████████████▍ | 0% 0%
Blitter/0 0.00% | | 0% 0%
Video/0 0.00% | | 0% 0%
VideoEnhance/0 0.00% | | 0% 0%