I got a new discovery: when playing with the brightness values I left the actual_brightness at 0 (using the fn-keys).
After rebooting Ubuntu the screen's brightness was LOW! So, the brightness value actually ends up controlling the screen's brightness - but only at boot-time and only once! I raised the level again using fn-keys (nothing happend on the screen), restarted and it was bright again! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/762670 Title: Laptop brightness on Dell XPS not controllable -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
