On Tue, Mar 26, 2019 at 08:44:39PM +0000, John Rigg wrote:
It may be that alsa has set the input gain to
minimum (or muted the inputs).
It looks like this is probably the problem:
https://linuxmusicians.com/viewtopic.php/?f=6&t=7543
According to that forum thread the 1818VSL turns its
input levels down to zero by default. You need to set
it in alsamixer.
John