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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [snb rc6] 2.21.3, Linux 3.8.1, SNA: hard lockup when watching videos with MPlayer"
href="https://bugs.freedesktop.org/show_bug.cgi?id=62373#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [snb rc6] 2.21.3, Linux 3.8.1, SNA: hard lockup when watching videos with MPlayer"
href="https://bugs.freedesktop.org/show_bug.cgi?id=62373">bug 62373</a>
from <span class="vcard"><a class="email" href="mailto:adf.lists@gmail.com" title="Andy Furniss <adf.lists@gmail.com>"> <span class="fn">Andy Furniss</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=62373#c13">comment #13</a>)
<span class="quote">> Implemented the bspec recommendation:
>
> commit d247cb7d0cdb73736f31612157e47f166af68ba0
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Mon Dec 8 10:07:25 2014 +0000
>
> sna/gen6: Poke PSMI control around WAIT_FOR_EVENT to prevent idling
>
> The bspec recommends preventing the hardware from going to sleep around
> a WAIT_FOR_EVENT, and tells us to use disable sleep bit in PSMI control
> to accomplish this.
>
> References: <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [snb rc6] 2.21.3, Linux 3.8.1, SNA: hard lockup when watching videos with MPlayer"
href="show_bug.cgi?id=62373">https://bugs.freedesktop.org/show_bug.cgi?id=62373</a>
> Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
>
> It's worth another go...</span >
OK so not my bug but with a baytrail J1900N this does not prevent a vaapi hard
lock (probably when de-interlacing h/w or s/w so fps = refresh) for me.
I only recently started seeing locks - turns out that dri3 was OK for me, but
of course it then got disabled by default and I started getting locks.
This is with kodi - it seems they recommend 910 as the last stable driver - and
I can lock with 311.
This was tested with head on this commit, kernel nightly and mesa about a week
old.</pre>
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