Non-working super key and two function keys on Google Chromebook Dell Latitute 5400 Chrome (google/sarien)
On the Google Chromebook Dell Latitude 5400 Chrome (google/sarien), enabling developer mode, and flashing a working TianoCore into the firmware’s RW_LEGACY
region using MrChromebox’ ChromeOS Firmware Utility Script, GNU/Linux logs the following messages below when pressing the super key (icon: globe), rectangle key (on F3) and overview function key (on F4) (Ubuntu 21.10 with linux-image-5.13.0-19-generic, Debian sid/unstable with linux-image-5.16.0-rc5-amd64-unsigned).
When pressing key X, Linux logs:
Super key:
[ 371.749464] atkbd serio0: Unknown key pressed (translated set 2, code 0xd4 on isa0060/serio0).
[ 371.749472] atkbd serio0: Use 'setkeycodes e054 <keycode>' to make it known.
Rectangle function key (F3):
[ 392.224626] atkbd serio0: Unknown key pressed (translated set 2, code 0xd5 on isa0060/serio0).
[ 392.224642] atkbd serio0: Use 'setkeycodes e055 <keycode>' to make it known.
Overview function key (F4):
[ 426.163166] atkbd serio0: Unknown key pressed (translated set 2, code 0xd6 on isa0060/serio0).
[ 426.163183] atkbd serio0: Use 'setkeycodes e056 <keycode>' to make it known.