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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 --- - Monitor flashes on and off"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73855">73855</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>Monitor flashes on and off
</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>jordi@sindominio.net
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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=92495" name="attach_92495" title="dmesg output">attachment 92495</a> <a href="attachment.cgi?id=92495&action=edit" title="dmesg output">[details]</a></span>
dmesg output
I've recently started experiencing a display bug with my x230 while using the
docking station
In short, monitor starts flashing off and on; if I open the laptop's lid, I
find that display is also flashing. Undock, flashing on the laptop's display is
gone. Unplug the DisplayPort cable, dock laptop, and plug in cable back, and
things go back to normal.
This is Debian sid, xserver-xorg-video-intel 2.21.15, kernel 3.12
The kernel reports, with every flash (I think):
[45627.712157] WARNING: CPU: 1 PID: 1719 at
/build/linux-xS3nxO/linux-3.12.6/drivers/gpu/drm/i915/intel_display.c:8853
check_crtc_state+0x63f/0xb30 [i915]()
[45627.712158] pipe state doesn't match!
[45627.787006] WARNING: CPU: 0 PID: 1719 at
/build/linux-xS3nxO/linux-3.12.6/drivers/gpu/drm/i915/intel_dp.c:2538
ironlake_crtc_disable+0x17a/0x930 [i915]()
I'm not even sure if this is a problem with DRI or the intel driver, please
advise what additional info you might need.
XRandR
------
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
LVDS1 connected (normal left inverted right x axis y axis)
1366x768 60.0 +
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
DP2 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis)
518mm x 324mm
1920x1200 60.0*+
1920x1080 60.0
1600x1200 60.0
1680x1050 60.0
1280x1024 60.0
1280x960 60.0
1024x768 60.0
800x600 60.3
640x480 60.0
720x400 70.1
DP3 disconnected (normal left inverted right x axis y axis)</pre>
</div>
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