[ubuntu-studio-users] Audio Issues

[Ralf Mardorf]

On Thu, 20 Jun 2019 08:35:43 +0200, Ralf Mardorf wrote:
>On Thu, 20 Jun 2019 08:06:42 +0200, Ralf Mardorf wrote:
>>PS:
>>
>>On my machine running
>>
>>  speaker-test
>>
>>works to test left and right phones channel of the default device (RME
>>HDSPe AIO), if nothing else grabs it. Unfortunately speaker-test
>>doesn't work for me, if I try to use options such as selecting a
>>device or specifying a channel.  
>
>The same is true for running
>
>  aplay /usr/share/sounds/alsa/*.wav

I do understand that for the mentioned RME card the channel issue
likely is hdspmixer related, but I don't understand why selecting audio
devices fails to work, since jackd using the alsa backend, is able to
use all audio devices, excepted of HDMI.