Comment 25 for bug 1740894

Ok, so after some debugging the fix is working but it hits a bug on some Dell laptops

From my Inspirong 11 debugging
- sudo evemu-record
<pick the keyboard interface>
press the airplane key
-> double events are generated

then to fix it
- cat /sys/class/dmi/id/modalias and see what the "pn" is
- edit /lib/udev/hwdb.d/60-keyboard.hwdb and add a section (adapt the 'Inspiron*3138' according your 'pn' from the previous command)

"#disable double airplane key events on Inspiron 3138
evdev:atkbd:dmi:bvn*:bvr*:bd*:svnDell*:pnInspiron*3138:pvr*
 KEYBOARD_KEY_88=unknown"

- sudo udevadm hwdb --update
- sudo udevadm trigger

try again, the flackyness should be fixed (and the event record should show "unknow" keys now)