@Robert, I also had that "first keypress" effect, even before I installed my workaround. Subsequent key presses are then ignored. I /guess/ that this is due to the event being recognized but then the brightness adjustment itself failing. I didn't have time to look at the source code, though. I'll eventually do that when I find the time.
Can you please check, whether you have the /proc/acpi/video/DGFX/LCD/brightness entry in your proc file system? If so, does echoing values between 0 and 100 to that (virtual) file as root change brightness? Make sure you use one of the allowed levels indicated in the brightness file! $ sudo su # echo 40 > /proc/acpi/video/DGFX/LCD/brightness # echo 100 > /proc/acpi/video/DGFX/LCD/brightness If that did something then you're most likely able to use the workaround I described. The brightness file might be named differently or reside in a different folder of the proc system. In that case you can adapt my script for your layout of the /proc filesystem. @Serghei: Same thing for you: Do you see the system file I mentioned? Can you change brightness manually? Your Laptop is from a different HP product line so it is probable that your case is different. -- Brightness adjustment doesn't work for HP ProBook 4720s https://bugs.launchpad.net/bugs/592592 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
