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    <body><span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - [VLV, backlight] Backlight Brighness not linear"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94813">bug 94813</a>
          <br>
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          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEW
           </td>
           <td>NEEDINFO
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - [VLV, backlight] Backlight Brighness not linear"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94813#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - [VLV, backlight] Backlight Brighness not linear"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94813">bug 94813</a>
              from <span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span></b>
        <pre>(In reply to Egbert Eich from <a href="show_bug.cgi?id=94813#c0">comment #0</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=122698" name="attach_122698" title="kernel log w drm.debug=0x6">attachment 122698</a> <a href="attachment.cgi?id=122698&action=edit" title="kernel log w drm.debug=0x6">[details]</a></span>
> kernel log w drm.debug=0x6

> We've received a report that the backlight brightness behaves non-linear on
> a VLV 
> (PCI DevID: 0x0f31) with kernel 4.5 or any eariler kernel. Driver seems to
> use the vlv_*_backlight() functions.

> The brightness range is: 0 - 7812. 
> Written to /sys/class/backlight/intel_backlight/brignness 0 and 7812 give
> black, 1 and 4687 both give full brightness.</span >

We seem to have neglected the bug a bit, apologies.

Egbert Eich, since There were improvements pushed in kernel that will benefit
to your system, so please re-test with latest kernel and mark as REOPENED if
you can reproduce (and attach fresh gpu error dump & kernel log) and RESOLVED/*
if you cannot reproduce.</pre>
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