Bug#964094: Video playback broken with AMD 5700 XT using amdgpu drivers

[Ski-lleR <ski_ller@protonmail.ch>]

Package: libva-drm2

Version: 2.8.0-1

After upgrading VA API to 2.8.0-1, i rebooted, and video playback was completely broken in mpv and firefox. Also firefox almost crashed my session because before reboot i have an opened tab with video playing.

Every video, no matter of the resolution / bitrate / codec run at less than 1 frame per second.

I downgraded this package :

va-driver-all_2.7.1-1_amd64.deb va-driver-all_2.7.1-1_i386.deb libva-dev_2.7.1-1_amd64.deb libva-dev_2.7.1-1_i386.deb libva2_2.7.1-1_amd64.deb libva2_2.7.1-1_i386.deb libva-x11-2_2.7.1-1_amd64.deb libva-x11-2_2.7.1-1_i386.deb libva-wayland2_2.7.1-1_amd64.deb libva-wayland2_2.7.1-1_i386.deb libva-drm2_2.7.1-1_amd64.deb libva-drm2_2.7.1-1_i386.deb libva-glx2_2.7.1-1_amd64.deb libva-glx2_2.7.1-1_i386.deb

After reboot, video playback was fine like before.

I re-upgraded VA API to 2.8.0-1 / rebooted to be sure that's not some one time bad boot, and the problem was back again, so it's clearly the upgrade to 2.8.0-1 who cause the problem. Let me know if you need more information.

Kernel version: 5.7.0-1

GPU: Sapphire Nitro+ RX 5700 XT 8G Special Edition (not overclocked)

Drives in use: amdgpu 19.1.0-1

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