Re: [alsa-devel] trouble using S/PDIF input on CMI8738-MC6: C-Media CMI8738 (model 55)

Jon wrote:

if I start speaker-test, then toggle the "IEC958 In Record" (which at that point has turned itself on automatically) to off, arecord then records an arbitrary amount of silence instead

There is a reason the "In Record" control is disabled; it is used internally by the driver to switch between analog and digital input.

Regards, Clemens