Can you please install the "evtest" package, run "sudo evtest", and select the device which represents your keyboard? Then you can press the Fn keys and check which of them have a wrong KEY_* code. Please note down the scan code, current, and intended key code.
For example, Event: time 1384346796.203894, type 4 (EV_MSC), code 4 (MSC_SCAN), value 06 Event: time 1384346796.203894, type 1 (EV_KEY), code 227 (KEY_SWITCHVIDEOMODE), value 0 This is scan code 4 (from "code 4 (MSC_SCAN)"), and key code "SWITCHVIDEOMODE". With the updated map that you provide I can fix udev's keymaps. ** Changed in: systemd (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1248808 Title: [keymap] volume and brightness keys on Samsung Chromebook To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1248808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs