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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 --- - [HD 3000] [Dual Monitor DVI+HDMI] [Asrock Z68 Extreme3 Gen3] Monitor connected to the DVI port randomly receives an incompatible monitor signal and is put to sleep."
href="https://bugs.freedesktop.org/show_bug.cgi?id=58024">58024</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HD 3000] [Dual Monitor DVI+HDMI] [Asrock Z68 Extreme3 Gen3] Monitor connected to the DVI port randomly receives an incompatible monitor signal and is put to sleep.
</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>fhaddad78@cox.net
</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=71207" name="attach_71207" title="dmesg">attachment 71207</a> <a href="attachment.cgi?id=71207&action=edit" title="dmesg">[details]</a></span>
dmesg
Overview
----------------------
I switched to the Intel HD3000 GPU (Sandy Bridge) from a dedicated NVIDIA PCIx
GPU. Prior to the switch, the problem to be described never occured. I was
successfully able to use the NVIDIA propietary driver mixed with uvesafb, and
the nouveau driver (alone).
Hardware
----------------------
Motherboard: Asrock Z68 Extreme3 Gen3 (latest firmware)
CPU: Intel Core i5 2500k w/ HD Graphics 3000 (Sandy Bridge)
Overclocking: Stock
Monitor: (2x) Dell Ultrasharp 2007FP (1600x1200@60Hz)
Connections: Left monitor is connected via DVI
Right monitor is connectd via HDMI
Occurs
----------------------
1) During the boot process of any Linux installation media that attempts to
load the Intel console frame buffer (Arch) or the Xorg driver (Ubuntu 12.04 and
12.10).
2) During the bootup of a minimum install of Linux (Gentoo, Arch) and during a
full desktop installation (Ubuntu).
Symptom
----------------------
During the bootup process, randomly, the left monitor, which is connected to
the DVI port on the motherboard, receives a bad signal. The result is either a
scrambled picture (think a tv receiving a bad signal via antenna) or the on
screen display reporting an incompatible signal and putting the monitor to
sleep.
Troubleshooting Steps
----------------------
1) Replaced the DVI cable
2) Moved the left monitor to the right side and connected it to the HDMI cable
and moved the right monitor to the left side and connected it to the DVI cable.
The problem followed the monitor which indicates the problem is somewhere
between the DVI port and the Intel driver.
3) Tried booting via UEFI and BIOS various distributions of Linux (Ubuntu
12.04, Ubuntu 12.10, and Arch) and displayed the same behavior.
4) Reverted to BIOS default values.
5) Reflashed the BIOS.
6) Tried various kernel versions 3.5.0, 3.5.9 EOL, 3.6.8, 3.6.9
*7) Disabled the Intel console frame buffer and switched to the uvesafb frame
buffer. However, I was unable to start the X server because I did not have the
appropriate drivers to use configured.
* After step 7, the problem has not occured.
Logs (Ubuntu 12.10)
----------------------
Linux fhaddad78-desktop 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:48:01 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux
I will attach the logs separately (exceeding the max characters for the bug
report).</pre>
</div>
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