[Bug 90360] [RV710/M92] Soft lock caused by UVD (linux 4.0.1)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90360

--- Comment #1 from Mohammad AlSaleh <CE.Mohammad.AlSaleh at gmail.com> ---
Hello.

Card:Mobility Radeon HD 4570

I set those at start-up:
echo performance > /sys/class/drm/card0/device/power_dpm_state
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level

When trying to use VDPAU/UVD (e.g. with ffmpeg). The GPU soft-locks. X can be
killed remotely. But the GPU is not reset properly. GL and VDPAU don't work
after I start X again.

This bug was net present in 3.18.2.

dmesg output attached.

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