Radeon Video

Wayland

Install the following packages as needed:

mesa-dri-gallium: necessary Mesa drivers.
mesa-va-gallium: VA-API drivers, for hardware accelerated video encoding and decoding

If driver auto-selection does not work, e.g. no mouse cursor under Sway, manual driver selection might be needed:

export MESA_LOADER_DRIVER_OVERRIDE=r300: for AMD's Radeon R300, R400, and R500 GPUs.
export MESA_LOADER_DRIVER_OVERRIDE=r600: for AMD's Radeon R600 GPUs up to Northern Islands. Officially supported by AMD.
export MESA_LOADER_DRIVER_OVERRIDE=radeonsi: for AMD's Southern Island GPUs and later. Officially supported by AMD.

For VA-API:

Install either the Free Software driver xf86-video-ati or the proprietary amdgpu firmware linux-firmware-amdgpu.

modprobe fbcon might be needed to avoid black screen when leaving Xorg.