Same problem on Lenovo Thinkpad T530: Changing the screen brightness from the control panel applet "Brightness and lock" does work, changing the brightness using the FN key does not.
I noticed that when I set the brightness to 100% in the control panel applet the fn keys do not work at all (slider that appears only moves one step to the left, brightness does not change) and when I put the brightness on 50% the slider works between 20% and 80%. I did not install any patch and I am running Ubuntu 13.04, on Ubuntu 12.10 everything worked flawless (If I don't count the little bug in thinkpad acpi that prevents me from turning the thinklight on using acpi :) ) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
