Brightness:
1) FAILED: the rejigged gsd-backlight-helper from here without success.
What I tried:
1) Following the post exactly, eg
Code:
sudo cp gsd-backlight-helper /usr/lib/gnome-settings-daemon
renamed the file to "gnome-settings-daemon".
2) FAILED: I noticed a folder called "gnome-settings-daemon-3.0"; I thought perhaps gsd-backlight-helper should be there. But after moving it in and rebooting no change.
3) FAILED: Following the wiki I added "acpi_osi=Linux acpi_backlight=vendor" to the line starting GRUB_CMDLINE_LINUX in
/etc/default/grub.
Now the brightness keys bring up a little display, but the brightness doesn't change.
4) FAILED: Adding "acer_wmi.blacklist=yes" to the line mentioned in 3. So I deleted it again.
5) Finally... SUCCESS: using Snow Dimon's method.
Code:
cd /
sudo leafpad .backlight
Paste in the script to handle the backlight keys:
Code:
#!/bin/sh
while [ "$1" != "exit" ] ; do
a=$(cat /sys/class/backlight/eeepc/brightness)
n=$((a*7))
echo $n > /sys/class/backlight/psb-bl/brightness
sleep 0.5
done
save, and make the script executable:
Code:
sudo chmod 755 /.backlight
This script needs to be able to write to the brightness it mentions. But this is a system file that's created afresh (?) each time we boot. So we need to enable writing to it each time we boot, by modifying rc.local, which runs each time we boot (pretty much?):
sudo leafpad /etc/rc.local
Above the exit line paste in this:
Code:
sudo chmod 666 /sys/class/backlight/psb-bl/brightness
Now set the .brightness script to run on startup. (I used Settings->Settings manager->Session and startup-> Application Autostart. Scroll down to see the "Add" button, click and give a name and more importantly the path to the backlight script, When I restarted this worked for me.
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