instead of the sleep 1 loop (which may drain battery a bit from all the
polling), maybe use:
while read file event
do
case "$file" in
*/volume)
# take volume actions here
;;
*/brightness)
# take brightness actions here
;;
esac
done < inotifywait -qm -e modify /proc/acpi/ibm/volume /proc/acpi/ibm/brightness
it'll need inotify-tools installed...
--
No notification when sliding audio volume, muting volume, sliding LCD
brightness on X31, X32, T60, R50e, T42, R52
https://bugs.launchpad.net/bugs/357673
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