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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI][BAT] igt@. - dmesg-warn - WARN_ON(intel_wait_for_register(dev_priv, regs->driver, (0x1 << ((pw_idx) * 2)), (0x1 << ((pw_idx) * 2)), 1))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108070#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI][BAT] igt@. - dmesg-warn - WARN_ON(intel_wait_for_register(dev_priv, regs->driver, (0x1 << ((pw_idx) * 2)), (0x1 << ((pw_idx) * 2)), 1))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108070">bug 108070</a>
from <span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span></b>
<pre>(In reply to Imre Deak from <a href="show_bug.cgi?id=108070#c18">comment #18</a>)
<span class="quote">> Different bug with the same error message.(In reply to Martin Peres from
> <a href="show_bug.cgi?id=108070#c17">comment #17</a>)
> > (In reply to Imre Deak from <a href="show_bug.cgi?id=108070#c16">comment #16</a>)
> > > Fix merged:
> > >
> > > commit 602438ead302aaa844899db5214b489d0d93fe18
> > > Author: Imre Deak <<a href="mailto:imre.deak@intel.com">imre.deak@intel.com</a>>
> > > Date: Tue Nov 6 18:06:21 2018 +0200
> > >
> > > drm/i915/icl: Fix port B combo PHY context loss after DC transitions
> >
> > Thanks, this really helped!
>
> Yep, I think different bug leading to the same error message.
>
> This one is due to our modeset vs. TC port connected state tracking being
> broken, a known issue. The test generates an HPD disconnect interrupt on the
> HDMI output during suspend and so we run the TypeC disconnect sequence, but
> there is no time for userspace/kernel console to react doing a modeset to
> disable the output. Then after resume we try to restore the output but since
> the port is in a disconnected state that will fail, leading to the timeout
> during powerwell enabling.
>
> So in general HPD on ICL type C ports is broken or not implemented yet,
> depending on how you want to look at it.</span >
Awesome comment! Thanks for stating it so clearly!</pre>
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