I now have a workaround for the brightness hotkeys (not for the other
two problems, though):
1) Create a script "brightness.sh":
#!/bin/bash
# Valid input?
if [ "$1" != up -a "$1" != down ]; then exit 1; fi
# Current brightness
CURRENT=`grep current /proc/acpi/video/DGFX/LCD/brightness | egrep -o
'([0-9]{,2}|100)$'`
if [ -z "$CURRENT" ]; then exit 1; fi
# Next value
if [ "$1" = up -a "$CURRENT" = 0 ]; then
NEXT=5
elif [ "$1" = down -a "$CURRENT" = 100 ]; then
NEXT=96
else
if [ "$1" = up ]; then
NEXT=`sed -nr "/^levels/ s/.*(^| )$CURRENT ([0-9]{,2}|100)(
|$).*/\2/p" /proc/acpi/video/DGFX/LCD/brightness`
else
NEXT=`sed -nr "/^levels/ s/.*(^| )([0-9]{,2}|100) $CURRENT(
|$).*/\2/p" /proc/acpi/video/DGFX/LCD/brightness`
fi
fi
if [ -z "$NEXT" ]; then exit 1; fi
# Set new brightness
echo -n $NEXT | tee /proc/acpi/video/DGFX/LCD/brightness >/dev/null
exit 0
2) sudo apt-get install halevt
3) Edit /etc/halevt/halevt.xml:
<!-- Support for Brightness Up/Down Events until #592592 has been solved
-->
<halevt:Device match="hal.info.category = input">
<halevt:Condition name="ButtonPressed" value="brightness-up"
exec="sudo /home/fgrandel/brightness.sh up"/>
<halevt:Condition name="ButtonPressed" value="brightness-down"
exec="sudo /home/fgrandel/brightness.sh down"/>
</halevt:Device>
4) sudo visudo
# Allow halevt to execute the brightness script
halevt laptop-fg = (root) NOPASSWD: /home/fgrandel/brightness.sh
--
Brightness adjustment doesn't work for HP ProBook 4720s
https://bugs.launchpad.net/bugs/592592
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu.
--
desktop-bugs mailing list
desktop-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
