Re: jconvolver does not find a running Jack2 server

[Moshe Werner <moshwe@xxxxxxxxx>]

Hi everyone,

On Tue, Aug 6, 2019 at 9:40 PM ORL - AMMD <orl@xxxxxxxx> wrote:

Hi!

Le 06/08/2019 à 20:24, Chris Caudle a écrit :
> On Tue, August 6, 2019 12:10 pm, Moshe Werner wrote:
>
>> Normally I would use Cadence to start Jack
> Checking jconvolver after starting jackd on the command line would give
> indication whether Cadence is starting jackd in an unexpected way.
>

Yep, could be. Once I got a similar problem (a long time ago), and the
fact is, I played with the jack server name options, and finally the
apps couldn't recognize the jack server running (iirc because of that
jack server name). It might be that Cadence runs jack with a specific
server name, and that you have to run every app through Cadence.

How can I check with what server name jack is run by Cadence?

This is the output in Cadence's log window:

Wed Aug 7 06:41:37 2019: Starting jack server...

Wed Aug 7 06:41:37 2019: JACK server starting in realtime mode with priority 89

Wed Aug 7 06:41:37 2019: self-connect-mode is "Don't restrict self connect requests"

Wed Aug 7 06:41:37 2019: Acquired audio card Audio2

Wed Aug 7 06:41:37 2019: creating alsa driver ... hw:D1248,0|hw:D1248,0|128|2|48000|0|0|nomon|swmeter|-|32bit

Wed Aug 7 06:41:37 2019: configuring for 48000Hz, period = 128 frames (2.7 ms), buffer = 2 periods

Wed Aug 7 06:41:37 2019: ALSA: final selected sample format for capture: 24bit little-endian in 3bytes format

Wed Aug 7 06:41:37 2019: ALSA: use 2 periods for capture

Wed Aug 7 06:41:37 2019: ALSA: final selected sample format for playback: 24bit little-endian in 3bytes format

Wed Aug 7 06:41:37 2019: ALSA: use 2 periods for playback

Another thing I'm thinking of, it might be that Cadence doesn't allow
self-connection from applications (there is an option in Ladish for
that, so that you don't have connexions messing up between those made by
Ladish and those made by the apps themselves). If yes, then maybe
jconvolver just wants to connect to some jack ports at startup and as
Cadence doesn't allow it, then it stops.

I normally start Ardour not through Cadenca and that works as expected.

 

In both cases, starting with jack in terminal, as Chris said, and
checking whether you can run jconvolver then will already help avoiding
some hypothesis.

 

 That looks as expected, no warnings shown.
What happens when that jackd instance is running and you start jconvolver?
Can you post the same for the jconvolver command?  I tried just to check
and did not see many startup messages, just one about modifying the
requested partition size from the conf file.

 with jackd from commamd line:

[moshew@moshe-laptop ~]$ jconvolver /usr/share/doc/jconvolver/DRC-Salon-Sofa/salonsofa.conf
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Can't connect to JACK

Hi Oliver,

--period 128 -> this is very low. Not all system/hardware are able to 
handle it.

All other programs (Ardour & Pianoteq etc.) work with this settings.

Do you see any reason why jconvolver would not?  

Thanks

Moshe

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