[Bug 61708] [SNB/SNA] MPlayer crashes Xserver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61708

--- Comment #17 from JS <js314592 at gmail.com> ---
Option "SwapbuffersWait" "false"
disables vsync, isn't it?

It looks like driver or kernel 3.8 are broken if vsync works with kernel
3.7+sna and kernel 3.8+uxa without root and crash.

How can be that runtime check modified to revert to 3.7 acting on kernel 3.8?

I compiled driver from git. Running MPlayer with "unset vblank_mode" few
seconds causes huge performance regression.
glxgears runs at 
5100 fps before MPlayer as usually
370 fps after MPlayer - haven't seen such low fps before

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