[AudioI] jackd and starting transport from the command line

Matt matt at audioinjector.net
Wed Feb 10 21:18:25 UTC 2021


Ahh, I forgot to connect the ports on the client side of the network.

I used JackPortMonitorGui to do that 
(http://forum.audioinjector.net/viewtopic.php@t=2993.html)

It is a nice way to get jaaa running on external embedded systems for 
characterising the analogue chain you are using.

Matt

On 10/2/21 9:55 pm, Gavin Hamill wrote:
> Ahh OK I've never used 'jack_transport' - had no idea it was even a 
> thing, hence the confusion :D
>
> Not to worry - there's likely a separate 'jackd2-common' or 
> 'jackd2-clients' - every distribution is different, just to keep 
> things interesting.
>
> Gavin.
>
>
> On Wed, 10 Feb 2021 at 10:53, Matt <matt at audioinjector.net 
> <mailto:matt at audioinjector.net>> wrote:
>
>     thanks for the startup script. I'm using buildroot with sysv.
>
>     Actually startup isn't the problem.
>
>     I think I may have to use jack_transport play or something like
>     that from the command line to start the transport - is that right  ?
>     One problem is that jack_transport isn't installed when selecting
>     the jackd2 package in buildroot for some reason.
>
>
>     On 10/2/21 9:31 pm, Gavin Hamill wrote:
>>     Matt,
>>
>>     The simplest way of running it as a system service (guessing
>>     that's what you're actually getting at?) is with a systemd unit file:
>>
>>     === /etc/systemd/system/jackd.service ====
>>
>>     [Unit]
>>     Description=JACK Server daemon
>>
>>     [Service]
>>     Restart=always
>>     RestartSec=5
>>     ExecStart=/usr/bin/jackd -d alsa -r 48000 -i 2 -o 2
>>
>>     ================
>>
>>     systemctl daemon-reload
>>     systemctl restart jackd
>>
>>     For the 'jack_load netmanager' try adding
>>
>>     ExecStartPost=/bin/sleep 2
>>     ExecStartPost=/usr/bin/jack_load netmanager -i -c
>>
>>     Each command needs the /full/path/to/binary with systemd :)
>>
>>     Cheers,
>>     Gavin.
>>
>>     On Wed, 10 Feb 2021 at 10:10, Matt via People
>>     <people at lists.audioinjector.net
>>     <mailto:people at lists.audioinjector.net>> wrote:
>>
>>         I've started a netjack sesstion :
>>
>>         On the server :
>>
>>             jackd -d alsa -r 48000 -i 2 -o 2 &
>>             sleep 2
>>             jack_load netmanager -i -c
>>
>>         On the client :
>>
>>             jackd -d net
>>
>>
>>         I am wondering if anyone knows how to start and stop the
>>         jackd transport
>>         from the command line ?
>>
>>         thanks
>>
>>         Matt
>>
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