[LAU] Behringer UMC1820 suddenly stopped working with JACK2 (after re-install)

David Runge dave at sleepmap.de
Tue May 7 00:46:57 CEST 2019

On 2019-05-06 17:23:14 (-0500), Chris Caudle wrote:
> On Mon, May 6, 2019 5:02 pm, nik at parkellipsen.de wrote:
> > ALSA: cannot set channel count to 2 for playback
> > ALSA: cannot configure playback channel
I also think this is the problem (for whatever reason).

> Have you tried not specifying the -o parameter as an experiment?  I admit
> it is grasping, it seems that jackd should be able to use just a subset of
> the channels if that is what you were using before.  Is this exactly the
> same kernel version/ALSA version you were using successfully before?

Alternatively you can try to boot with the linux-lts kernel and see if
it is kernel related (that would suck).


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