Some other observations: 1) Executing /etc/acpi/video_brightnessdown.sh or /etc/acpi/video_brightnessup.sh changes the brightness just one step, but tweaking those scripts, or even deleting them, has no effect in the bug. It seems they are not called at all when the Fn keys are pressed, I don't know if this is expected behavior.
2) Blacklisting the video module fixes the four-step behavior, but causes other problems. A brightness change pop-up does not appear anymore, the brightness applet loses sync with the current brightness and trying to change brightness through the applet causes a two-second hanging for each step. 3) hal and gnome-power manager also seem to be conflicting in automatic brightness adjustment. A quick flicker when I unplug the ac cable indicates that the brightness was adjusted twice. -- Four steps of brightness changing after pressing a brightness key only once https://bugs.launchpad.net/bugs/239413 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
