On the Dell Latitude X1 running Breezy, neither xev nor showkey capture Fn-F3 (Battery).
However, I see this output in kern.log:
Mar 15 19:27:52 localhost kernel: [4297940.314000] atkbd.c: Unknown key pressed (translated set 2, code 0x87 on isa0060/serio0).
Mar 15 19:27:52 localhost kernel: [4297940.314000] atkbd.c: Use 'setkeycodes e007 <keycode>' to make it known.
On the Dell Latitude X1 running Breezy, neither xev nor showkey capture Fn-F3 (Battery).
However, I see this output in kern.log:
Mar 15 19:27:52 localhost kernel: [4297940.314000] atkbd.c: Unknown key pressed (translated set 2, code 0x87 on isa0060/serio0).
Mar 15 19:27:52 localhost kernel: [4297940.314000] atkbd.c: Use 'setkeycodes e007 <keycode>' to make it known.