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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>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL-Y regression] blank screen on boot"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92037">92037</a>
</td>
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<th>Summary</th>
<td>[SKL-Y regression] blank screen on boot
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>tjaalton@ubuntu.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=118340" name="attach_118340" title="dmesg">attachment 118340</a> <a href="attachment.cgi?id=118340&action=edit" title="dmesg">[details]</a></span>
dmesg
2-in-1 SDP doesn't boot up properly with 4.3-rc1:
[ 3.755082] [drm:intel_dp_aux_ch [i915]] *ERROR* dp aux hw did not signal
timeout (has irq: 1)
!
[ 3.771067] [drm:intel_dp_aux_ch [i915]] *ERROR* dp aux hw did not signal
timeout (has irq: 1)
!
[ 3.787066] [drm:intel_dp_aux_ch [i915]] *ERROR* dp aux hw did not signal
timeout (has irq: 1)
!
[ 3.803054] [drm:intel_dp_aux_ch [i915]] *ERROR* dp aux hw did not signal
timeout (has irq: 1)
!
[ 3.819051] [drm:intel_dp_aux_ch [i915]] *ERROR* dp aux hw did not signal
timeout (has irq: 1)
!
[ 3.819076] [drm:intel_dp_aux_ch [i915]] *ERROR* dp_aux_ch not done status
0xad40001f
[ 3.843011] ------------[ cut here ]------------
[ 3.843046] WARNING: CPU: 1 PID: 42 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/intel_dp.c:
854 intel_dp_aux_ch+0x10c/0x640 [i915]()
worked fine with 4.2+backports</pre>
</div>
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