Hello Christopher. Sorry for the delay. I am having problems downloading the daily images but I trusted with Alpha 2, and the bug persists there.
And I did not test the mainline kernels since as noted earlier, even with the Saucy kernel, if we directly write to /sys/class/backlight/intel_backlight/brightness then the brightness does change, so even the default Saucy kernel is clearly capable of telling the hardware to change its brightness. The problem lies probably in that the GUI as in the power management applet popup and the keyboard hook which should handle the pressing of the physical brightness keys on keyboard are somehow not able to modify the /sys/class/backlight/* file or so. With the existing setup, I have having to sudo to modify the /sys/class/* file, so perhaps the process running the GUI popup or the keyboard hook does not have the relevant permissions to change the /sys/class/* file. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1255428 Title: LCD brightness control keys and widget do not work on Intel Graphics on Saucy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1255428/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
