In case someone might wonder... you need to have 'libnotify-bin' installed in order to get the script running.
sudo aptitude install libnotify-bin -- No notification when sliding audio volume, muting volume, sliding LCD brightness on X31, X32, T60, R50e, T42, R52 https://bugs.launchpad.net/bugs/357673 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs