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<base href="https://bugs.freedesktop.org/" />
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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 --- - LVDS doesn't come back after "xrandr --output LVDS1 --off; xrandr --output LVDS1 --auto""
href="https://bugs.freedesktop.org/show_bug.cgi?id=61642">61642</a>
</td>
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<tr>
<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>Summary</th>
<td>LVDS doesn't come back after "xrandr --output LVDS1 --off; xrandr --output LVDS1 --auto"
</td>
</tr>
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<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>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Reporter</th>
<td>cworth@cworth.org
</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>
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<th>Component</th>
<td>Driver/intel
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>I found this behavior consistnent with kernels 3.6.11, 3.8.0, and 3.8.1
With an external monitor plugged into my Lenovo x220 I can turn the LVDS
off with:
xrandr --output LVDS1 --off
And this works as expected, (LVDS display turns off). But when I try
to turn it on again with:
xrandr --output LVDS1 --auto
nothing comes on. This is in spite of the fact that xrandr does report
that the LVDS output is on at this point:
$ xrandr | grep -A1 LVDS1
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis)
277mm x 156mm
1366x768 60.0*+
At this point things appear entirely off, (it does not appear to be a
case where just the backlight is off, for example).
Note that I can cause the LVDS display to turn on by issuing a modeset,
such as:
xrandr --output LVDS1 --mode 1024x768
At this point my display turns on again, and then finally I can get
the mode I want back with:
xrandr --output LVDS1 --auto
Please let me know if you need any further information, and I'll be
happy to supply it.
Thanks,
-Carl</pre>
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