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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 - Facilitate override on minimum brightness level"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86936">86936</a>
</td>
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<th>Summary</th>
<td>Facilitate override on minimum brightness level
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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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
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<th>Reporter</th>
<td>mail@aurabindo.in
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=110359" name="attach_110359" title="/sys/kernel/debug/dri/0/i915_opregion">attachment 110359</a> <a href="attachment.cgi?id=110359&action=edit" title="/sys/kernel/debug/dri/0/i915_opregion">[details]</a></span>
/sys/kernel/debug/dri/0/i915_opregion
Recent changes made the minimum allowed brightness level from 0 to an arbitrary
value of 25% (of Max value).
Such an arbitrary value may not be suitable for all users alike. However, it
also fixes some issues on a few hardware. Hence facilitate an override for
systems that work sanely without limit on minimum brightneess.
Mailing list thread: <a href="http://www.gossamer-threads.com/lists/linux/kernel/2060904">http://www.gossamer-threads.com/lists/linux/kernel/2060904</a>
Associated commit:
commit e1c412e75754ab7b7002f3e18a2652d999c40d4b
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Wed Nov 5 14:46:31 2014 +0200
drm/i915: safeguard against too high minimum brightness
Never trust (your interpretation of) the VBT. Regression from
commit 6dda730e55f412a6dfb181cae6784822ba463847
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Tue Jun 24 18:27:40 2014 +0300
drm/i915: respect the VBT minimum backlight brightness</pre>
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