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<body><span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT] igt/kms_flip/wf_vblank-vs-modeset causes WARNING: intel_dp.c:2653 intel_dp_link_down()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70570">bug 70570</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>NEW
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT] igt/kms_flip/wf_vblank-vs-modeset causes WARNING: intel_dp.c:2653 intel_dp_link_down()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70570#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT] igt/kms_flip/wf_vblank-vs-modeset causes WARNING: intel_dp.c:2653 intel_dp_link_down()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70570">bug 70570</a>
from <span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=70570#c7">comment #7</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=70570#c6">comment #6</a>)
> > (In reply to <a href="show_bug.cgi?id=70570#c4">comment #4</a>)
> > > (In reply to <a href="show_bug.cgi?id=70570#c3">comment #3</a>)
> > > > (In reply to <a href="show_bug.cgi?id=70570#c1">comment #1</a>)
> > > > > Created <span class=""><a href="attachment.cgi?id=92023" name="attach_92023" title="don't disable DP port during hot unplug">attachment 92023</a> <a href="attachment.cgi?id=92023&action=edit" title="don't disable DP port during hot unplug">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=70570&attachment=92023'>[review]</a> [review] [review] [review] [review] [review]
> > > > > don't disable DP port during hot unplug
> > > > >
> > > > > I hit the same WARN by first unplugging the DP cable and then doing an
> > > > > xrandr --off. The problem is that that during the modeset the driver tries
> > > > > to disable the already disabled DP port. One solution would be to leave the
> > > > > port enabled during the unplug event handling and only disable it during the
> > > > > subsequent modeset.
> > > > >
> > > > > The attach patch does this, could you try it?
> > > >
> > > > This bug still can be reproduce with the patch, please check the dmesg "Call
> > > > trace with patch" for details, thanks.
> > >
> > > This looks like a separate issue, could you provide a dmesg with
> > > drm.debug=0xe set?
> >
> > Please check "dmesg with drm.debug=0xe" in attachment, thanks.
>
> Do you run the test on an external monitor or is it an embedded panel?
>
> The beginning of the log is missing, could you boot with drm.debug=14
> log_buf_len=16M and send a log including the bootup messages too?</span >
It's an embedded panel.
Please check "dmesg with drm.debug=14 log_buf_len=16M" in attachment. Thanks.</pre>
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