Re: Problems connecting Sound Devices usbpre2 to JACK

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On 2021-04-23 13:02, robertlazarski wrote:
I have two shells open, one with a Jack Session and one with jltcdump. The jack command does change the display on the interface. I couldn't get qjackctl to recognize the usb interface, only the default intel sound devices. Audacity doesn't see the device. Any ideas?

Can you describe what you mean by qjackctl won't recognize the interface? The interface is obviously running:

Shell 1:
...
/root> jackd -d alsa -d hw:USBPre2
...
Acquire audio card Audio1
creating alsa driver ... hw:USBPre2|hw:USBPre2|1024|2|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods

Shell #2, does nothing.

You have to connect the audio data from the appropriate channel on the interface to jltcdump. You don't get any connections by default with jackd. You should see something like system:capture_1 and system:capture_2 ports, whichever one has the time code signal should be connected to the jltcdump port.


--
Chris Caudle
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