[PROBLEM] USB-volume controll on raspberry pi

[Tim Curtis]

Sure. Use either of the two commands below to see if the triggerhappy daemon is processing events. If no events are logged then the USB device was not recognized by Linux as an input device which would be a manufacturer issue.

Code:

sudo thd --dump /dev/imput/event*
sudo systemctl status triggerhappy

I ran a quick test with a USB volume control I had lying around and no issues.