I have installed Arch Linux on my laptop. Controlling ALSA using the hardware audio keys works fine using Openbox shortcuts. I only need to make the mute button lights up, like it does in Windows.
How do I set e.g. the mute button LED on my Packard Bell TJ72 laptop?
I know that it may be difficult to give me an exact answer, but a pointer to a known method for seting special laptop keyboard LEDs (mute, WiFi, email) will count as the correct answer if it helps me achieve my goal.