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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 --- - GDM can't show and screen freeze after run screen saver and turn off backlight command on Haswell chipset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58769">58769</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>GDM can't show and screen freeze after run screen saver and turn off backlight command on Haswell chipset
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>evawang@linpus.com
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=72120" name="attach_72120" title="dmesg.log">attachment 72120</a> <a href="attachment.cgi?id=72120&action=edit" title="dmesg.log">[details]</a></span>
dmesg.log
GDM can't show and screen freeze after screen saver and turn off backlight
command("gnome-screensaver-command -l;sleep 3;xset dpms force off")
But, if you press Ctrl+Alt+F3(tty3) then press Ctrl+Alt+F2(tty0), GDM will
show.
Dmesg:
[11577.928164] [drm:intel_dp_set_link_train] *ERROR* Timed out waiting for DP
idle patterns
[11577.928167] [drm:i915_write32] *ERROR* Unknown unclaimed register before
writing to 64040
Expected output: it enter to screensaver and turn off backlight, then press any
key to resume system, it should shows GDM.
This only happens on Haswell chipset, but it is OK on Ivybridge.
Kernel 3.7.0 added intel 3.7.0 branch kernel patch
Xorg1.12.0
Model: Lenovo Y410 Y510</pre>
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