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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT]HDMI screen flashes on some modes when running "testdisplay -a""
href="https://bugs.freedesktop.org/show_bug.cgi?id=88698">88698</a>
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<th>Summary</th>
<td>[BYT]HDMI screen flashes on some modes when running "testdisplay -a"
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>jeff.zheng@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=112655" name="attach_112655" title="dmesg log">attachment 112655</a> <a href="attachment.cgi?id=112655&action=edit" title="dmesg log">[details]</a></span>
dmesg log
==System Environment==
--------------------------
Regression: No. I tried drm-intel-testing 2014_12_06 commit
drm-intel-next-queued 2014_12_06 and 2014_11_06 commit, the issue exists too.
Monitor: ASUS VS239HR, ASUS PA238Q
Non-working platforms: BYT
==kernel==
--------------------------
-testing: 2015_01_18 commit 6dd5bb25ce0ed3a0012b69d553d74e1a0d39c313(test
fails)
-queued: e9413c76eb4c990bd3882d2c2ad1f228819b4e7d(test fails in the same way)
-fixes: 78f4e4767cdde8b50aae44642458fe02c631811d(test fails in the same way)
==Bug detailed description==
-----------------------------
Connect to HDMI display, Boot BYT, login and run "testdisplay -a", HDMI screen
flashes at this mode:
1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74250
==Reproduce steps==
----------------------------
1. Connect to HDMI display, Boot BYT, login
2. testdisplay -i to get the bad mode, in my testing, it's 20,2
3. Run "./testdisplay -o 20,2"
Note:I tried on both ASUS VS239HR, ASUS PA238Q and saw this issue
The similar issue happens on VGA, DP screen too.</pre>
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