Fixing Function Keys on the Aula FL108 Pro Keyboard in Linux

I’ve been using the Aula FL108 Pro keyboard, and overall it's a solid board. It supports three connectivity options:

It also has four system modes: Windows, macOS, iOS, and Android.

Works Great on Windows

On Windows, everything works flawlessly across all three connection types.

On Linux, the keyboard is detected in all three modes. Wired mode works perfectly.

However, in wireless mode, the function keys (F1–F12) weren’t behaving correctly.

Instead of performing their normal roles, they acted like media keys:

Even pressing Fn + F-keys didn’t change the behavior.

With the help of an LLM (thanks ChatGPT), it told me to try checking lsusb.

In retrospect, it should have been obvious but it never occured to me to check it because it works perfectly on Windows and on Linux with wired mode.

Running lsusb gave this clue:

Bus 001 Device 012: ID 05ac:024f Apple, Inc. Aluminium Keyboard (ANSI)

The keyboard was being detected as an Apple keyboard.

A quick Google search led me to the Arch Wiki page on Apple keyboards:

The wiki explains the hid_apple module uses a parameter called fnmode. Setting:

fnmode=2

restores normal function key behavior.

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

Create or edit this file:

/etc/modprobe.d/hid_apple.conf

Add this line:

options hid_apple fnmode=2

Then update initramfs if required by your distro, and reboot.

Function keys work normally again, across all modes. Wireless is now just as usable as wired.

If you have an Aula FL108 Pro (or a similar board) acting like a Mac keyboard on Linux, this should solve it.