could be the same as bug #1153173
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https://bugs.launchpad.net/bugs/1105604
Title:
Brightness control stopped working
To manage notifications about this
Thank you for taking the time to report this bug and helping to make
Ubuntu better. The issue you are reporting is an upstream one and it
would be nice if somebody having it could send the bug to the developers
of the software by following the instructions at
https://wiki.ubuntu.com/Bugs/Upstream/G
#!/bin/bash
NUM2=`cat /sys/class/backlight/intel_backlight/brightness`
if [ 'up' = $1 ]; then
NUM2=`expr $NUM2 \+ 50`
else
NUM2=`expr $NUM2 \- 50`
fi
echo $NUM2 > /sys/class/backlight/intel_backlight/brightness
use with up or dn parameter to control brightness until resolved
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An update on this bug... I have two raring installs. For one of them the
brightness controls work, one doesn't.
The one that doesn't work is a vanilla upgrade to Raring 13.04 from
Quantal 12.10.
The one that works is also an upgrade from 12.10, but there are two major
differences:
1. I installed
The controls still don't work in my Dell Inspiron 15R with Raring.
However, I can change the brightness by running this command in the terminal:
echo XXX > /sys/class/backlight/intel_backlight/brightness
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I can use the slider in the brighness settings, but my fn-keys don't
work anymore in 13.04.
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https://bugs.launchpad.net/bugs/1105604
Title:
Brightness c
Just noticed my brightness controls are working again.
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You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu.
https://bugs.launchpad.net/bugs/1105604
Title:
Brightness control stopped working
To manage no
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-settings-daemon (Ubuntu)
Status: New => Confirmed
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https
Latest update... the brightness control keys 'work'. The slider moves up
and down, but there is no impact to the actual brightness. I'm
controlling the brightness manually by setting it automatically after
bootup and resume|thaw via scripts.
I'm running raring with the Mir ppa, but I have another
Here is the syslog during the suspend/wake. This maybe a separate bug...
but will move later if nec:
Mar 8 18:49:30 malraux kernel: [ 593.626366] composite sync not supported
Mar 8 18:49:31 malraux kernel: [ 593.787884] composite sync not supported
Mar 8 18:49:31 malraux NetworkManager[1067]:
Now on Raring, the backlight is off after resuming from suspend. I have to run
the following (blind type) after resuming each time:
echo 978 | sudo tee /sys/class/backlight/intel_backlight/brightness
Also, the function keys to control the brightness setting still don't
work. They do on Quantal.
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