This model emits 0x9a for the microphone mute button above the keyboard,
so let's map it to correct keycode.
KEYBOARD_KEY_6b=fn
KEYBOARD_KEY_6c=screenlock # FIXME: lock tablet device/buttons
+# Travelmate P648-G2-MG
+evdev:atkbd:dmi:bvn*:bvr*:bd*:svnAcer*:pnTravelMate*P648-G2-MG*:pvr*
+ KEYBOARD_KEY_8a=f20 # Microphone mute button; should be micmute
+
# on some models this isn't brightnessup
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnAcer*:pn*5210*:pvr*
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnAcer*:pn*5220*:pvr*