[Bug 85058] [snb][regression] Crash when scaling Java application window

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85058

--- Comment #16 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 6b98f16241c2a4788f3b5fe4c0d956a849d2ac05
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Oct 16 08:26:03 2014 +0100

    sna: Allow TearFree updates to continue even when the GPU is wedged

    Even if we cannot render using the GPU, we should still be able to
    request that the outputs be flipped. So try, and only if that fails,
    resort to writing directly into the scanout.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=85058
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

will fix the tearing (though if the gpu is truly wedged, we need a much more
recent kernel to avoid falling back to direct writes into the scanout).

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