Created attachment 97128 [details]
The external lenovo keyboard has a number of multimedia keys that currently are not mapped at all by udev and ends up being forwarded as mouse buttons. You can find various attempts to work-around it online, see https://bbs.archlinux.org/viewtopic.php?id=177063 or http://forums.fedoraforum.org/showthread.php?t=195591
I would prefer instead to add the mappings to udev keymaps just like the thinkpad keyboards are. I will attach the necessary files to do so.
Created attachment 97129 [details]
Updated keymap rules
Thanks! Translated to hwdb and pushed to http://cgit.freedesktop.org/systemd/systemd/commit/?id=d258d4967e