Comment 25 for bug 1440891

More people mention that it doesn't work out of the box and that the man page is not helping them how to get started. Please see https://bugs.debian.org/cgi-bin/pkgreport.cgi?pkg=xbacklight and https://bugs.launchpad.net/ubuntu/+source/xbacklight/+bugs?field.status:list=NEW

Perhaps the installer (in e.g. ncurses) should ask if all users should be allowed to run this or not (default). In this way, the majority of the users would be able to use this application with more ease.