No change I'm afraid. I might be misunderstanding what those options do, but the problem isn't the backlight itself. As I stated in the original bug report, changing the value in /sys/class/backlight/intel_backlight/brightness does dim the screen (as does the slider in system settings / brightness & lock). The problem is that the brightness function keys (Fn+F4 and Fn+F5) stopped working after upgrading to Saucy.
Somehow, what appears to be a keyboard issue seems to have morphed into hunting for a backlight-related problem (unless the two are more intertwined than I think) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1229591 Title: 8086:0116 [Dell Inspiron 14z (N411z)] Display brightness keys don't generate evdev events after saucy upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1229591/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs