Hi jim_p, if you are referring to:
https://gitlab.archlinux.org/archlinux/packaging/packages/mesa/-/commit/15e037dba159f893360d642e4efa13e09682b080
I don't think is related to this issue.
I suggest to report it here: https://gitlab.freedesktop.org/mesa/mesa/-/issues
In your log this looks relevant:
[ 0.318][v][vo/gpu/vaapi] using EGL dmabuf interop
[ 0.319][v][vo/gpu/vaapi] Trying to open a x11 VA display...
[ 0.319][d][vo/gpu/vaapi/vaapi] libva: VA-API version 1.20.0
[ 0.319][d][vo/gpu/vaapi/vaapi] libva: Trying to open
/usr/lib/x86_64-linux-gnu/dri/r600_drv_video.so
[ 0.328][d][vo/gpu/vaapi/vaapi] libva: Found init function __vaDriverInit_1_20
[ 0.340][d][vo/gpu/vaapi/vaapi] libva: va_openDriver() returns 0
[ 0.341][v][vo/gpu/vaapi/vaapi] Initialized VAAPI: version 1.20
[ 0.341][d][ffmpeg] AVHWDeviceContext: VAAPI driver: Mesa Gallium
driver 23.3.4-1 for AMD CAICOS (DRM 2.50.0 / 6.5.0-5-amd64, LLVM
17.0.6).
[ 0.341][d][ffmpeg] AVHWDeviceContext: Driver not found in known
nonstandard list, using standard behaviour.
[ 0.341][v][vo/gpu/vaapi] Going to probe surface formats (may log
bogus errors)...
[ 0.344][d][vo/gpu/vaapi] Failed to create mapper
[ 0.344][d][vo/gpu/vaapi] Unsupported format: yuyv422
[ 0.345][d][vo/gpu/vaapi] Failed to create mapper
[ 0.345][d][vo/gpu/vaapi] Unsupported format: uyvy422
[ 0.346][d][vo/gpu/vaapi] vaExportSurfaceHandle() failed (an
unsupported memory type was supplied)
[ 0.346][d][vo/gpu/vaapi] Unsupported format: argb
[ 0.346][d][vo/gpu/vaapi] Supported formats:
[ 0.346][d][vo/gpu/vaapi] nv12
[ 0.346][d][vo/gpu/vaapi] p010
[ 0.346][d][vo/gpu/vaapi] yuv420p
[ 0.346][d][vo/gpu/vaapi] gray
[ 0.346][d][vo/gpu/vaapi] yuv444p
[ 0.346][d][vo/gpu/vaapi] bgra
[ 0.346][d][vo/gpu/vaapi] rgba
[ 0.346][d][vo/gpu/vaapi] bgr0
[ 0.346][d][vo/gpu/vaapi] rgb0
[ 0.346][v][vo/gpu/vaapi] Done probing surface formats.