Multimedia keys don't work when using "Serial + Keyboard + Mouse + Joystick" (T. 2.0)

[rastersoft]

I've been using a Teensy 2.0 with Arduino for a keyboard, and when I tried to implement the Multimedia keys, they didn't work. I tried everything, but nothing was received in the computer (I use Linux, and tried reading directly from /dev/input/eventXX device, but nothing was received when I send multimedia keycodes like volume up or mute). Finally, I tried to change the mode from "Serial + Keyboard + Mouse + Joystick" to "Keyboard + Mouse + Joystick" only, and now everything works fine. I don't know where the bug can be.

[PaulStoffregen]

Yup, the Teensy 2.0 hardware doesn't have enough USB endpoints.