It's also possible that those particular keys are attached to a different input device than the normal keyboard. Easiest is probably just to try input0, input1, and so on (until you get a "No such file or directory"), and check whether they appear on any of those.
-- brightness hotkeys not functional on Lenovo Ideapad u450p https://bugs.launchpad.net/bugs/571421 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
