Red Hat Bugzilla – Bug 224564
Brightness keys don't adjust LCD brightness on PowerBook G4
Last modified: 2013-03-05 22:48:51 EST
Description of problem:
Version-Release number of selected component (if applicable):
gnome-power-manager-2.16.0-4.fc6 (assuming, of course, that it's
gnome-power-manager that's responsible for this -- I'm not sure if it is or not)
Steps to Reproduce:
1. Press the Brightness keys (F1 and F2)
2. Watch the Gnome on-screen display pop on the screen, and see it act like it's
changing the LCD brightness
3. Notice that the LCD brightness doesn't change at all.
The LCD brightness should go up or down, as appropriate.
I can manually change the LCD brightness by typing:
echo -n '127' > /sys/class/backlight/*/brightness
(where you obviously change 127 if you want it darker or brighter)
I don't know if this should be filed as a seperate bug or not, but the keyboard
backlight doesn't work at all, either. (I'm happy to file it as a seperate bug
-- just let me know.) I can get the keyboard backlight to work if I install the
pbbuttonsd application, but it's not part of Fedora Core or Fedora Extras.
You need to use CVS HAL for the /sys/class/backlight stuff to work. There are
rpm's in the utopia repository if you are interested.
I'd be happy to try the RPMs from the utopia repo, if I could find them. Google
doesn't seem to be able to find the repo for me. Can you please point me to the
There wasn't a HAL RPM for PPC in the utopia repo, so I took the SRPM and
rebuild it. Only one problem, it requires hal-info, which I can't seem to find
OOps. Sorry, should be there now:
This is working in FC7, so I'm going to go ahead and close this bug.