I’m using an rx570, which does have vaapi support to dec/enc h264 and others, however after installing manjaro (clean install of kde-minimal, installed today) vainfo shows the following:
Trying display: wayland
Trying display: x11
vainfo: VA-API version: 1.17 (libva 2.17.1)
vainfo: Driver version: Mesa Gallium driver 22.3.5 for AMD Radeon RX 570 Series (polaris10, LLVM 15.0.7, DRM 3.49, 6.2.0-1-MANJARO)
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileNone : VAEntrypointVideoProc
I do have libva-mesa-driver installed and mesa-vdpau, also vdpau support is extremely limited too. This doesn’t happen on other distros (tested arch and linux mint). Also I’m using linux62 because I’ve seen some people with a similar issue online, saying updating the kernel fixed it for them, this however isn’t the case for me, it happens on linux61 and 62.