<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - xset dpms force {off,standby,suspend} returns after ~20 seconds (GeForce 8400 GS)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82527">82527</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>xset dpms force {off,standby,suspend} returns after ~20 seconds (GeForce 8400 GS)
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.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>martin@mvath.de
</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>
<tr>
<th>Component</th>
<td>Driver/nouveau
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>With nouveau drivers (current versions: kernel 3.15.9,
xf86-video-nouveau-1.0.10, xorg-server-1.15.0; however the issue exists since
several years)
"xset dpms force off" (or standby/suspend) does not work here as it should:
In all three cases, the monitor switches off for about 20 seconds but then
switches on again.
The issue is completely reproducible and does not occur with the proprietary
nvidia-drivers.
I am rather sure that nothing (except perhaps nouveau drivers themselves)
causes any activity which might cancel the effect of "xset dpms force off":
This is already proved by the fact that it works with the proprietary
nvidia-drivers, but I also checked many times that no suspectible task is
running (and besides systemd the bug has occured also with openrc and with a
minimal number of started services).
As mentioned, the problem exists since several years, so I do not think that
any of the recent changes referred to in <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NV50, bisected, RFC patch] xset dpms force {on,off} does not work over DP"
href="show_bug.cgi?id=76483">bug 76483</a> is related to this.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>