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<body><span class="vcard"><a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> <span class="fn">Imre Deak</span></a>
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<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [SKL] GPU HANG on rcs0 on Intel i915 on drm-tip"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102221">bug 102221</a>
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<td>imre.deak@intel.com
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [SKL] GPU HANG on rcs0 on Intel i915 on drm-tip"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102221#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [SKL] GPU HANG on rcs0 on Intel i915 on drm-tip"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102221">bug 102221</a>
from <span class="vcard"><a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> <span class="fn">Imre Deak</span></a>
</span></b>
<pre>(In reply to Elizabeth from <a href="show_bug.cgi?id=102221#c7">comment #7</a>)
<span class="quote">> (In reply to Imre Deak from <a href="show_bug.cgi?id=102221#c4">comment #4</a>)
> > (In reply to Chris Wilson from <a href="show_bug.cgi?id=102221#c2">comment #2</a>)
> > > No, extra drm.debug is not required. Looks like it didn't send the final
> > > context-switch interrupt.
> > >
> > > Reasonable suspicion laid on
> >
> > Looks like a known DMC firmware bug, where toggling DC6 enabled state can
> > corrupt registers backed by DC6 power context. There is an internal bug
> > ticket opened for this, I'm planning to provide more debug info to the
> > firmware team and convince them to fix it.
> >
> > One register that can get corrupted is GEN8_MASTER_IRQ leaving all i915
> > interrupts disabled, that would also explain the missing ctx switch
> > interrupt.
> > ...
> Hello Imre, any relevant update for this bug that can be shared at FDO?
> Thank you.</span >
The firmware version with the fix is planned to be released next week, so stay
tuned:)</pre>
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