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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Black screen with KMS on powerpc iBook"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90220">90220</a>
</td>
</tr>
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<th>Summary</th>
<td>Black screen with KMS on powerpc iBook
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PowerPC
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Driver/Radeon
</td>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
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<th>Reporter</th>
<td>dand1972@yahoo.com
</td>
</tr>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=115416" name="attach_115416" title="dmesg output">attachment 115416</a> <a href="attachment.cgi?id=115416&action=edit" title="dmesg output">[details]</a></span>
dmesg output
In Debian Jessie, I get a black screen booting with KMS enabled. The backlight
remains lit, but the screen displays as black. It happens on boot up about
when these lines appear:
[ 16.797096] [drm] Initialized drm 1.1.0 20060810
[ 18.117763] [drm] radeon kernel modesetting enabled.
>From then on I can log in blind, and I'm running pbbuttonsd so the brightness
keys can dim or brighten the screen, but it always remains black. Switching to
a console also gives me a black screen.
Adding the kernel parameters video=offb:off radeon.modeset=1 radeon.agpmode=-1
changed nothing.
This isn't a new problem, I've had it in previous Debian releases, but I hope
someone might take a crack at this. Right now the only workaround is to
disable KMS and work with a very slow desktop (and no mplayer or vlc fullscreen
upscaling).
This is on an G3 iBook (M8603LL/A - PowerBook4,3 - A1007)
Thanks,
Dan</pre>
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