okand/keychron-k2-function-keys-linux

A small script to allow the Keychron K2 Keyboard to boot up with function keys enabled by default.

Enable Function Keys On The Keychron K2 Mechanical Keyboard Under Linux

Below, you'll find the steps required to create a systemd command that will run at boot to disable the media keys and restore f1-f12 functionality.

Step 1

Open a terminal window and enter the following command:

sudo nano /etc/systemd/system/keychron.service

Step 2

Paste the following into the window:

[Unit]
Description=The command to make the Keychron K2 work

[Service]
Type=oneshot
ExecStart=/bin/bash -c "echo 0 > /sys/module/hid_apple/parameters/fnmode"

[Install]
WantedBy=multi-user.target

Press ctrl+o and then ctrl+x to exit.

Step 3

In the terminal, first refresh your list of systemd-services by typing:

systemctl daemon-reload

Then run the keychron service by typing:

systemctl start keychron

That's it! The function keys should now work.

Step 4

For it to persist after a reboot you will need to enable the service. Type the following:

systemctl enable keychron

Closing Remarks

If you want to simply drag/drop the file that you create manually in the steps provided, I have it under the scripts folder in this repo. Download it and drop it in /etc/systemd/system/, doing Step 3 at the end.