Hello Can you please run this in a terminal: killall gnome-power-manager && gnome-power-manager --verbose 2>&1 | tee ~/gpm.log
This kills gnome-power-manager and re-executes it in verbose mode, saving the log file gpm.log to your home directory. Try to change the brightness then attach this file to the report. The most useful things in this log are usually the values that g-p-m thinks that things are. You can look through to see if they match your expectations and what you've set them to by other means. Thanks Fabio ** Package changed: ubuntu => gnome-power-manager (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/762670 Title: Laptop brightness on Dell XPS not controllable -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
