[Bug 88152] 720p and 1080 H.264 videos lock-up on playback with vlc / vdpau on Radeon 3850HD

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88152

--- Comment #40 from Arthur Marsh <arthur.marsh at internode.on.net> ---
The "disable semaphores" patch:
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-4.1&id=013ead48a843442e63b9426e3bd5df18ca5d054a

appears to stop the lock-ups from happening.

It also appears to prevent one having multiple vdpau-enabled vlc sessions from
working at the same time, and there are some issues with videos of different
resolutions sometimes showing a black screen when their resolution is different
from the previous video played. Playing a few different videos with vlc appears
to reset things so that a video that previously showed a black screen plays
fine again.

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