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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW Bisected] HDMI hot plug sporadically cause ERROR"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82551">82551</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW Bisected] HDMI hot plug sporadically cause ERROR
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lei.a.liu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=104550" name="attach_104550" title="dmesg">attachment 104550</a> <a href="attachment.cgi?id=104550&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
I can't find a good commit.
Non-working platforms: HSW
==kernel==
--------------------------
-nightly: cf1dde8b87834496aabd0a534b1c0695a3572e8d (failed)
drm-intel-nightly: 2014y-08m-11d-23h-30m-32s integration manifest
-queued: 14bf993e83e1d6924f4bf4506120a15c4b255e58 (failed)
drm/i915/bdw: Always use MMIO flips with Execlists
-fixes: be71eabebaf9f142612d34d42292b454e984dcb5 (failed)
Revert "drm/i915: Enable semaphores on BDW"
==Bug detailed description==
-----------------------------
HDMI Hot plug sporadically cause ERROR. Only connecting with ASUS(PB238)
monitor can get a high reproduction rate. I enumerate some situations like
below:
1 Connecting with other monitor, plug in and unplug HDMI ten times, I can't get
this ERROR
2 Connecting with ASUS(PB238) monitor,plug in and unplug HDMI ten times, I get
at least 5 times.
3 Connecting with ASUS(PB238) monitor,plug in and unplug HDMI until get ERROR.
Then connect with other monitor, plug in and unplug HDMI ten times, I get at
least 4 times.
Output ERROR:
[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 228
[ 52.007690] Raw EDID:
[ 52.007708] 00 ff ff ff ff ff ff 00 04 69 a2 23 6b 9f 00 00
[ 52.007742] 31 17 01 03 80 33 1d 78 2a e2 95 a2 55 4f 9f 26
[ 52.007775] 11 50 54 b7 ef 00 d1 c0 b3 00 95 00 81 80 81 40
[ 52.007808] 81 c0 71 4f 01 01 02 3a 80 ff ff ff ff ff ff ff
[ 52.007842] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 52.007891] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 52.007926] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 52.007963] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==Reproduce steps==
----------------------------
1. plugin and unplug HDMI monitor</pre>
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