Had been working with this user on forum thread: http://ubuntuforums.org/showthread.php?t=2112027
I've confirmed that his /sys/class/backlight/acpi_video0/brightness data can be changed, but those changes do not get picked up. What he didn't mention yet... is that if he does reboot to MAC OSX, changes the brightness setting there, then reboots the hardware back into Ubuntu, the MAC OSX changed setting is retained. He has a functional workaround, but it is outside Ubuntu and the Linux kernel. Changes within Ubuntu do not make affect. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1115555 Title: Backlight control does not work, but there are entries in /sys/class/backlight. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1115555/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs