Ubuntu 13.04 clean install on XPS 13 Developer Edition (Sputnik) Up to date packages which includes kernel 3.8.0-25-generic brightness not working as well documented above...
ran: sudo bash -c '/bin/echo 0 > /sys/class/backlight/intel_backlight/brightness'
it now works. keyboard controls, on-screen display, and the brightness actually changes.
Ubuntu 13.04 clean install on XPS 13 Developer Edition (Sputnik)
Up to date packages which includes kernel 3.8.0-25-generic
brightness not working as well documented above...
ran: backlight/ intel_backlight /brightness'
sudo bash -c '/bin/echo 0 > /sys/class/
it now works. keyboard controls, on-screen display, and the brightness actually changes.