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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW GT3]System hangs while running glxgear with SNA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77263#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW GT3]System hangs while running glxgear with SNA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77263">bug 77263</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=77263#c5">comment #5</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=77263#c2">comment #2</a>)
> > Have you tried the usual suspects? Disable rc6, ppgtt, hw contexts?
>
> Jinxian, please try disable rc6.
>
> ppgtt: I thought it's not enabled by default?</span >
Depends on just which branch you test. -nightly should be just the aliasing
ppgtt, might be worth just disabling even the aliasing.
<span class="quote">> hw contexts: I don't have idea. Chris can you tell how to disable it?</span >
It requires a kernel patch to disable. And unfortunately mesa no longer works
without contexts, so we can't test the theory that context switching is the
root cause - or we could cook up igt/rendercopy to use multiple contexts
concurrently and see what happens.</pre>
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