[pulseaudio-discuss] jack modules problem with idjc

[Per Gunnarsson]

Hello!

I am having issues connecting my USB microphone (a ZOOM H1) to idjc 
through pulseaudio and jack.
The OS is Debian Stretch on amd64.

Now I have tried to:

pactl load-module module-jack-source \
source_name="alsa_input.usb 
ZOOM_Corporation_H1_000000000000-00.analog-stereo

and

pactl load-module module-jack-sink \
sink_name="alsa_output.pci-0000_00_14.2.analog-stereo"

but I get no sound in idjc from the microphone. I am sure I got the jack 
connections in idjc wired right.
The sink seems to be working fine.
If I only use my USB mic with pulseaudio, things work OK (I have to 
crank up the recording volume a bit,
but sound is fine).
Now I did not know where to start, but I suspect the jack module or 
something in jack to be the problem.


pactl lists jack modules like this:

Module #10
         Name: module-jackdbus-detect
         Argument: channels=2
         Usage counter: n/a
         Properties:
                 module.author = "David Henningsson"
                 module.description = "Adds JACK sink/source ports when 
JACK is started"
                 module.version = "9.0"

Module #84
         Name: module-jack-sink
         Argument: sink_name=alsa_output.pci-0000_00_14.2.analog-stereo
         Usage counter: 1
         Properties:
                 module.author = "Lennart Poettering"
                 module.description = "JACK Sink"
                 module.version = "9.0"

Module #85
         Name: module-jack-source
         Argument: 
source_name=alsa_input.usb-ZOOM_Corporation_H1_000000000000-00.analog-stereo
         Usage counter: 1
         Properties:
                 module.author = "Lennart Poettering"
                 module.description = "JACK Source"Sink #24
         State: IDLE
         Name: alsa_output.pci-0000_00_14.2.analog-stereo.2
         Description: Jack sink (PulseAudio JACK Sink)
         Driver: module-jack-sink.c
         Sample Specification: float32le 2ch 44100Hz
         Channel Map: front-left,front-right
         Owner Module: 84
         Mute: no
         Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 
65536 / 100% / 0.00 dB
                 balance 0.00
         Base Volume: 65536 / 100% / 0.00 dB
         Monitor Source: 
alsa_output.pci-0000_00_14.2.analog-stereo.2.monitor
         Latency: 64149 usec, configured 46439 usec
         Flags: DECIBEL_VOLUME LATENCY
         Properties:
                 device.api = "jack"
                 device.description = "Jack sink (PulseAudio JACK Sink)"
                 jack.client_name = "PulseAudio JACK Sink"
                 device.icon_name = "audio-card"
         Formats:
                     pcm

Source #49
         State: RUNNING
         Name: 
alsa_input.usb-ZOOM_Corporation_H1_000000000000-00.analog-stereo.2
         Description: Jack source (PulseAudio JACK Source)
         Driver: module-jack-source.c
         Sample Specification: float32le 2ch 44100Hz
         Channel Map: front-left,front-right
         Owner Module: 85
         Mute: no
         Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 
65536 / 100% / 0.00 dB
                 balance 0.00
         Base Volume: 65536 / 100% / 0.00 dB
         Monitor of Sink: n/a
         Latency: 29274 usec, configured 23219 usec
         Flags: DECIBEL_VOLUME LATENCY
         Properties:
                 device.api = "jack"
                 device.description = "Jack source (PulseAudio JACK Source)"
                 jack.client_name = "PulseAudio JACK Source"
                 device.icon_name = "audio-input-microphone"
         Formats:
                      pcm