ASUS Eee PC 1025c
# xrandr --output DVI-0 --auto
Setting brightness in /sys/class/backlight/acpi_video0/ with the scripts for acpid change the values of the files brightness and actual_brightness but do not have any effect on current screen brightness.
Set the following as kernel parameters in your bootloader
To make this permant...
Now there is a folder eeepc-wmi in /sys/class/backlight and the scripts need to be updated
#!/bin/sh bl_device=/sys/class/backlight/eeepc-wmi/brightness echo $(($(cat $bl_device)+1)) >$bl_device
#!/bin/sh bl_device=/sys/class/backlight/eeepc-wmi/brightness echo $(($(cat $bl_device)-1)) >$bl_device
The scripts change the screen brightness everytime I run them. Unfortunately the acpi events for brightnessup and brightnessdown are not available anymore :( --> this may help
AC plug / unplug
.. ac_adapter) case "$2" in ACPI0003:00) case "$4" in 00000000) logger 'AC unpluged' echo $(($(cat /sys/class/backlight/eeepc-wmi/max_brightness)/2)) > /sys/class/backlight/eeepc-wmi/brightness ;; 00000001) logger 'AC pluged' echo $(($(cat /sys/class/backlight/eeepc-wmi/max_brightness)-1)) > /sys/class/backlight/eeepc-wmi/brightness ;; esac ;; *) logger "AC Adapter ACPI action undefined: $2" ;; esac ;; ..