his groups show puls e-access
I think he means pulse.....not sure what access is
if I am right he has the pulseaudio sound server.
He can then view some snapshots of sound volumes here
choose the correct sound card here
2) If he does not have pulse running.....he can run the command alsamixer....and unmute his sound and raise volumes similar to this
but I do not run his distro so he may need to install alsa-utils to get access to alsamixer
Hopefully his menu has an option for a mixer already?