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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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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 --- - screen black when starting X after commit eb1bfe807cb7b62a326fa20df5e3118a32c6f923 in linux kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80010">80010</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>screen black when starting X after commit eb1bfe807cb7b62a326fa20df5e3118a32c6f923 in linux kernel
</td>
</tr>
<tr>
<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>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>trohwer85@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86 (IA32)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>DRI CVS
</td>
</tr>
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<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=101023" name="attach_101023" title="log of bisection process">attachment 101023</a> <a href="attachment.cgi?id=101023&action=edit" title="log of bisection process">[details]</a></span>
log of bisection process
I have the problem with newer Linux kernels, that after starting X the screen
is black. Suspend/resume fixes the problem.
I bisected the problem (log attached). I then reproduced the problem with Linux
kernel version 3.15.0:
In the vanilla version the problem exists (dmesg output attached in comment).
Removing the line
.initial_config = intel_fb_initial_config,
in drivers/gpu/drm/i915/intel_fbdev.c
fixes the problem (dmesg output attached in comment).
The machine is a Thinkpad T61. I also attached the kernel .config in a comment.</pre>
</div>
</p>
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