triggerhappy and volume

[mezcal]

I have installed moode 8.3.3.

If I set Volume type: software it works. If I set Volume type: hardware it does not.
The problem is that user nobody has not access to the hardware mixer. I have hifiberry dac+. I don't know if it also applies to other dacs.

Code:

pi@moode:~/t $ sudo -u nobody amixer
amixer: Mixer attach default error: No such file or directory

The command amixer is in /var/www/vol.sh.

Solution is adding nobody to the audio group.

Code:

sudo usermod -a -G audio nobody

It is also possible to start the triggerhappy as another user from the audio group. For example mpd user.