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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 - [945GME] wrong scale for backlight with Xfce"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99126">99126</a>
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<th>Summary</th>
<td>[945GME] wrong scale for backlight with Xfce
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>x86 (IA32)
</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
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<th>Component</th>
<td>Driver/intel
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Reporter</th>
<td>rpnpif@free.fr
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<pre>The scale of change of the intensity of the backlight is wrong.
Changing this is done with the hot keys to increase or decrease.
The minimum get a black screen.
cat /sys/class/backlight/eeepc/brigthness
0
cat /sys/class/backlight/intel_backlight/brigthness
0
1st press on the hot key : get also a black screen.
cat /sys/class/backlight/eeepc/brigthness
1
cat /sys/class/backlight/intel_backlight/brigthness
79787
2nd press : get a medium intensity.
cat /sys/class/backlight/eeepc/brigthness
2
cat /sys/class/backlight/intel_backlight/brigthness
159374
3rd to 12th press get a normal change of the backlight.
To : 796875
But the intensity of the 12th is less than the 11th.
Expected :
The minimum should not light off the screen.
/sys/class/backlight/intel_backlight/brigthness
159374
<span class="quote">>From /sys/class/backlight/eeepc/brigthness=1 to 10 or 12, the backlight </span >
should change linearly without light off.
This buggy behaviour was seen only with Xfce, not with lightdm or the Linux
console.
Chipset: 945GME
Architecture: X86
Found in version xserver-xorg-video-intel/2:2.99.917+git20161105-1~bpo8+1 from
Debian Jessie-backports.
Works fine with older versions.
Machine:Eeepc 901.
Reproducible : always.
See <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=846882">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=846882</a></pre>
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