[LAU] Jack does not see USB sound card Boss Micro BR-80

Erik Steffl erik at zasran.com
Tue Oct 8 05:15:52 UTC 2013


On 09/19/2013 04:20 PM, Erik Steffl wrote:
> On 09/19/2013 02:46 AM, Clemens Ladisch wrote:
>> Erik Steffl wrote:
>>> aplay -l
>>> card 2: BR80AUDIO [BR-80(AUDIO)], device 0: USB Audio [USB Audio]
>>
>>> Boss Micro BR-80 seems to be recognized properly but qjackctl does not
>>> list it in Set under any of Interface, Input Device, Output Device
>>> choices, I only see /dev/dsp, /dev/audio, plughw:0 and hw:0.
>>
>> "hw:2" should appear in those lists.  Did you start QjackCtl before
>> plugging the device in?  Can you start Jack manually with
>> "jackd -d alsa -d hw:2"?
>
>    started qjackctl after the device was plugged in,
>
>    starting jack manually seems to be working (also tested wiuth
> ardour2, both recording and playback works).
>
>    Does that mean there is a bug in qjackctl? Using the version in
> Ubuntu 13.04 which is qjackctl 0.3.9-2
>
>    Here's what jackd prints out when started manually:
>
> erik at jojda:~$ jackd -d alsa -d hw:2
> jackdmp 1.9.10
> Copyright 2001-2005 Paul Davis and others.
> Copyright 2004-2013 Grame.
> jackdmp comes with ABSOLUTELY NO WARRANTY
> This is free software, and you are welcome to redistribute it
> under certain conditions; see the file COPYING for details
> no message buffer overruns
> no message buffer overruns
> no message buffer overruns
> JACK server starting in realtime mode with priority 10
> audio_reservation_init
> Acquire audio card Audio2
> creating alsa driver ... hw:2|hw:2|1024|2|48000|0|0|nomon|swmeter|-|32bit
> configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods
> ALSA: final selected sample format for capture: 32bit integer little-endian
> ALSA: use 2 periods for capture
> ALSA: final selected sample format for playback: 32bit integer
> little-endian
> ALSA: use 2 periods for playback

   https://bugs.launchpad.net/ubuntu/+source/qjackctl/+bug/1228727

   created the bug above, turns out there is a way to make qjackctl work 
but it involves clicking on the mysterious '>' buttons next to the 
dropdowns (the dropdown menus in question are: Interface, Input Device, 
Output Device in the Setup dialog)

   The tooltips for '>' buttons do not explain much (they seems to be 
pretty much the same as tooltips for dropdowns.

   Details in the bug, here's the summary of what the tooltips say and 
what the menus (dropdown and '>' buttons) offer:

Interface dropdown tooltip: 'The PCM device name to use'
Interface '>' tooltip: 'Select PCM device name'

Input device dropdown tooltip: 'Alternate input device for capture'
Input device '>' tooltip: 'Select input device for capture'

Output device dropdown tooltip: 'Alternate output device for playback'
Output device '>' tooltip: 'Select output device for playback'

The values for all dropdown menus are:
   - (default)
   - /dev/dsp
   - /dev/audio
   - plughw:0
   - hw:0

The values for all '>' menus:
   - hw:0 HD-Audio Generic
   - hw:1 HDA ATI SB
   - hw:1,0 ALC892 Analog
   - hw:2 BR-80(AUDIO)
   - hw:2,0 USB Audio
   - (default)

   Anybody knows what's going on here? Pointers to explanations? Why are 
there TWO list of devices to choose from?

   thanks!

	ero


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