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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - HDMI drop out"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81196">81196</a>
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</tr>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>HDMI drop out
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>nbi@wideopenwest.com
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/Radeon
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Radeon driver version = 1:7.3.0-1ubuntu3.1
Hardware: HP 4310s laptop, ATI 4330
OS: Linux Mint 17, VLC 2.1.2
HDMI works ok most of the time, but suffers from sporadic random drop outs.
When a drop out occurs kern.log shows:
HDMI: ELD buf size is 0, force 128
HDMI: invalid ELD data byte 0
Also (don't know if relevant) an occasional:
hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger
bdl_pos_adj.
When a drop out (entire HDMI signal lost - not just audio) occurs VLC continues
playing. A mouse click on desktop causes HDMI output to resume. No screen
blanking or any kind of suspend mode is active so I can't speculate on the
cause of the drop out.
I do however think the driver should be able to gracefully cope with it. At
least provide an optional flag that causes the driver to ignore the trigger
event for the drop out since obviously it's ok most of the time.</pre>
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