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<body><span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [snb] External DP monitor goes black during heavy display activity"
href="https://bugs.freedesktop.org/show_bug.cgi?id=59824">bug 59824</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>ASSIGNED
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [snb] External DP monitor goes black during heavy display activity"
href="https://bugs.freedesktop.org/show_bug.cgi?id=59824#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [snb] External DP monitor goes black during heavy display activity"
href="https://bugs.freedesktop.org/show_bug.cgi?id=59824">bug 59824</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>Seems like this is another case of high resolution display on SNB w/ inadequate
BIOS provided memory latency values.
First please try with latest drm-intel-nightly, and also provide the full dmesg
w/ drm.debug=0xe. The watermark code has changed sinificantly since your last
attempt.
If that doesn't help, then please try increasing the memory latency values as
shown in <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [snb dp hotplug] Pipe B, PCH transcoder B FIFO underrun"
href="show_bug.cgi?id=70254#c39">bug 70254, comment 39</a></pre>
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