I have the same issue on Ubuntu 12.04 with KDE 4:4.8.4a-0ubuntu0.2: Sometimes the screen becomes very bright and after a while the backlight starts to flicker and then switches minimum brightness (as configured in the power management settings).
Also when I use the brightness keys (Fn+Up/Dn), the backlight will often just start to flicker instead of switching to the intended brightness. Sometimes it just allows to toggle minimum/maximum brightness, but skips all steps in between. The machine is a Samsung N140 with an Intel 945GSE graphics chipset. Ubuntu 12.04 kdelibs-bin 4:4.8.4a-0ubuntu0.2 xserver-xorg-video-intel 2:2.17.0-1ubuntu4.1 -- 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/382167 Title: LCD backlight flickers when adjusting it and when the system is idle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/382167/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs