[Bug 54226] [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54226

--- Comment #113 from Daniel Vetter <daniel at ffwll.ch> ---
(In reply to comment #112)
> Just a few remarks.
> I still see this bug with Kernel 3.8, Mesa 9.2.1 and DRI 2.99.904.
> Moreover, with switching from Mesa 9.1.x to Mesa 9.2.x the number of lockups
> highly increased (especially in games).

On snb the blorp engine in mesa has become a bit more hang-happy, see bug
#70151
Not all gpu hangs are created equal ;-)

> Additionally with running the latest drivers complete system lockups are
> gone, but it's still a lockup for multiple seconds with following VT
> switching.

You mean a gpu hang happens while when doing a vt switch?

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