[Bug 70764] [snb] TearFree now triggers stuck semaphores (due to Eliminate the synchronous wait from inside TearFree)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70764

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
In recent kernels (by which I mean drm-intel-nightly), hangcheck will capture
the error upon the first struck semaphore. That /sys/class/drm/card0/error
would be useful to see when the error occurs. (I'm wondering if this something
funky with the pageflip for instance.)

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