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<body><span class="vcard"><a class="email" href="mailto:conselvan2@gmail.com" title="Ander Conselvan de Oliveira <conselvan2@gmail.com>"> <span class="fn">Ander Conselvan de Oliveira</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - i915:No display with Display port [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90963">bug 90963</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">CC</td>
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<td>airlied@freedesktop.org, ville.syrjala@linux.intel.com
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<td style="text-align:right;">i915 features</td>
<td>display/DP
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<td>display/DP MST
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - i915:No display with Display port [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90963#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - i915:No display with Display port [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90963">bug 90963</a>
from <span class="vcard"><a class="email" href="mailto:conselvan2@gmail.com" title="Ander Conselvan de Oliveira <conselvan2@gmail.com>"> <span class="fn">Ander Conselvan de Oliveira</span></a>
</span></b>
<pre>(In reply to Eong Chen from <a href="show_bug.cgi?id=90963#c11">comment #11</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=118986" name="attach_118986" title="full dmesg with Ander Conselvan's patch">attachment 118986</a> <a href="attachment.cgi?id=118986&action=edit" title="full dmesg with Ander Conselvan's patch">[details]</a></span>
> full dmesg with Ander Conselvan's patch
>
> Tried the patch on 4.2.3.</span >
Unfortunately that didn't help. It seems we reach the maximum voltage level and
the monitor still doesn't reach clock recovery.
I see in the log that DP MST is being used and according to Viktor this started
failing with 3.17, which introduce MST support, so this is very likely related
to that.
It seems the race between hpd_pulse and modeset that Ville tried to address [1]
is triggered, except it doesn't look like there is two concurrent calls to
intel_dp_start_link_train().
[1] <a href="https://patchwork.freedesktop.org/patch/58114/">https://patchwork.freedesktop.org/patch/58114/</a></pre>
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