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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 --- - no backlight after suspend to ram with modesetting Trinity [7400G]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73882">73882</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>no backlight after suspend to ram with modesetting Trinity [7400G]
</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>djtm@gmx.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>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/Radeon
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=92523" name="attach_92523" title="dmesg 3.13">attachment 92523</a> <a href="attachment.cgi?id=92523&action=edit" title="dmesg 3.13">[details]</a></span>
dmesg 3.13
Everything else is still working, I can type. But there is no backlight. This
is without X running at all, kernel 3.13.
I can suspend and resume without modesetting, when I use --quirk-s3-mode and
--quirk-s3-bios *together*. I can't properly resume any other way so far
(except with fglrx).
Any hints would be very appreciated.
I've tried:
echo 1 > /sys/class/backlight/radeon_bl0/bl_power
echo 1 > /sys/class/backlight/acpi_video0/bl_power
echo 30 > /sys/class/backlight/acpi_video0/brightness
echo 30 > /sys/class/backlight/radeon_bl0/brightness
sleep 5
vbetool dpms off
vbetool dpms on
to no avail.</pre>
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</p>
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