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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 --- - DP lost output after switching the terminal sometimes on Ivybridge plaform"
href="https://bugs.freedesktop.org/show_bug.cgi?id=63451">63451</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>DP lost output after switching the terminal sometimes on Ivybridge plaform
</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>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>xiong.y.zhang@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg CVS
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=77837" name="attach_77837" title="After the last mode setting,DP lost output">attachment 77837</a> <a href="attachment.cgi?id=77837&action=edit" title="After the last mode setting,DP lost output">[details]</a></span>
After the last mode setting,DP lost output
Bios Version: ACRVMBY1.86C.0080.B00
Kernel: 3.9.rc6
Label: MBY02SDP
Platform: MahoBay
Processor/Chipset: IvyBridge/PantherPoint
OS:SUSE Linux Enterprise Desktop 11 SP3 Beta4 (x86_64)
2D driver version: 2.21.4
Details:
Connected the VGA + DP and then switched the terminal, sometimes DP output
lost, VGA output normally. This issue doesn't find when connected the HDMI and
VGA.
Steps to Reproduce:
1.Connect DP + VGA .
2.Switch the terminal.
Further info:
If connecting one DP, terminal switch has no problem. But if connecting two
displays(DP + VGA), DP worked as 1920 X 1200, VGA worked as 1024 X 768,
sometimes DP will lost display no matter in text mode or graphic mode, the lost
rate is about 20 percent. When switch terminal to console, DP will work in 1920
X 1200 also. So maybe DP can't work perfectly in 1920 X 1200 on this platform.</pre>
</div>
</p>
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