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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 --- - Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76276">76276</a>
</td>
</tr>
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<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>Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7
</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>All
</td>
</tr>
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<th>Reporter</th>
<td>romain@orebokech.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=95952" name="attach_95952" title="dmesg of broken kernel with drm.debug=0xe">attachment 95952</a> <a href="attachment.cgi?id=95952&action=edit" title="dmesg of broken kernel with drm.debug=0xe">[details]</a></span>
dmesg of broken kernel with drm.debug=0xe
On a Dell XPS13 (IVB version), backlight control is broken with v3.14-rc7, it
was previously working with v3.13. Reverting patch bc0bb9fd1c78 ("drm/i915:
remove QUIRK_NO_PCH_PWM_ENABLE") gets things working again.</pre>
</div>
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