I triaged a bit for duplicates of this bug. Hopefully the bugs I marked are truly duplicates and not some other issues. There are also other thinkpad & brightness bugs which may be related to this, but I did not mark them as duplicates: bugs #67805, #69624, #70073, #76061 at least.
-- Screen brightness buttons don't work properly on Thinkpad Z61T https://launchpad.net/bugs/61184 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
