Curt <cu...@free.fr> writes: > On 2017-08-07, Rodolfo Medina <rodolfo.med...@gmail.com> wrote: >> >> Besides, I ran alsamixer, selected the USB card and unmuted everything. But >> then, when I try to record, no sound is recorded. I do: >> > > This makes no sense BTW. Unmuted everything? You're *recording*, so what > you want to do in alsamixer is to select your external usb audio card > (F6), display its capture device(s) (F5), and toggle on the input > channel of your choice (space bar). > > But I assume you have arrived at this crucial result in one way or another.
I did. Besides, the USB card does not even work with headphones: when headphones are plugged into it, no sound is heard from them. Rodolfo