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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lubuntu 1404 Kernel 3.19 the DDI1_BKLTCTL is no signal at S3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94245">94245</a>
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<th>Summary</th>
<td>Lubuntu 1404 Kernel 3.19 the DDI1_BKLTCTL is no signal at S3
</td>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>x86 (IA32)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>shadow.yang@advantech.com.tw
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=121876" name="attach_121876" title="dmesg_S3.log & xrandr_S3.log">attachment 121876</a> <a href="attachment.cgi?id=121876&action=edit" title="dmesg_S3.log & xrandr_S3.log">[details]</a></span>
dmesg_S3.log & xrandr_S3.log
How often does the steps listed above trigger the issue? always
The following information about system:
-- system architecture: i686
-- kernel version: 3.19
-- Linux distribution: Lubuntu
-- Machine or mother board model:Bay trail-M N2920
-- Display connector: HDMI, DP, VGA
-- Kernel Parameter: drm.debug=0x1e, log_buf_len=1M
The DDI1_BKLTCTL has output at S3 resume on WIN7 /8, but Lubuntu 1404 Kernel
3.19 the DDI1_BKLTCTL is no signal at S3 resume.
The xrand and dmesg file please reference the attachment.
"dmesg.log" / "xrand.log" before enter S3.
"dmesg_S3.log" / "xrand_S3.log" resume from S3.
We are using Legacy VBIOS. To update the Fedora23's LiveCD,the DDI1_BKLTCTL
still no output PWM.</pre>
</div>
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