I set /sys/module/hid_apple/parameters/fnmode to 2 and it gets overwritten to 1 on each reboot

Question

I'm running Ubuntu alone on a Macbook, with no dual boot. I run:

echo 2 > /sys/module/hid_apple/parameters/fnmode

both as root and with sudo chmod, but after restarting it's back to 1.

How can I prevent this?

Answer 1

After editing /etc/modprobe.d/hid_apple.conf and putting options hid_apple fnmode=2, you need to run:

sudo update-initramfs -u

Reboot after that.