15 Jun
2016
15 Jun
'16
2:03 a.m.
Friends
Apologies if this has been asked and answered already but I can find no
solutns.
My jackd set up is quite idiosyncratic. When I plug in my external
sound gear I have to change the connections each time to get sound out.
I also use a variety of gear from the same computer each with its own
requirements.
I would like to be able to write a script that would start up jackd, set
the default sound IO to use jackd (I am on Ubuntu Studio) start a couple
of other applications and change the connections.
The man page for jackd is not much help. I have found some pages that
have part of the answer (e.., http://www.64studio.com/node/740) but
surely there is some direct way of manipulating jackd connections
without a mouse and GUI?
Worik
--
Why is the legal status of chardonnay different to that of cannabis?
root(a)worik.org 021-1680650, (03) 4821804
Aotearoa (New Zealand)
I voted for love
15 Jun
15 Jun
5:02 a.m.
Hi worik,
worik wrote:
Friends
Apologies if this has been asked and answered already but I can find no
solutns.
My jackd set up is quite idiosyncratic. When I plug in my external
sound gear I have to change the connections each time to get sound out.
I also use a variety of gear from the same computer each with its own
requirements.
I would like to be able to write a script that would start up jackd, set
the default sound IO to use jackd (I am on Ubuntu Studio) start a couple
of other applications and change the connections.
The man page for jackd is not much help. I have found some pages that
have part of the answer (e.., http://www.64studio.com/node/740) but
surely there is some direct way of manipulating jackd connections
without a mouse and GUI?
Jack usually comes with command-line utilities jack_connect
and jack_disconnect, which you can easily script. To see
what ports are available, you can parse the output of
jack_lsp, which is the quick-and-dirty approach Nama uses.
There is jack-plumbing, a simple utility/daemon which will
make connections based on a config file, jack.plumbing.
There is also a python module that looks like it might
be helpful, although I wonder if it can connect
arbitrary ports.
https://pypi.python.org/pypi/JACK-Client/0.4.1
cheers,
Joel
Worik
--
Why is the legal status of chardonnay different to that of cannabis?
root(a)worik.org 021-1680650, (03) 4821804
Aotearoa (New Zealand)
I voted for love
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
--
Joel Roth
10:15 a.m.
For my scripts I'm using aj-snapshot.
http://aj-snapshot.sourceforge.net/
https://aur.archlinux.org/packages/aj-snapshot/
http://packages.ubuntu.com/xenial/aj-snapshot
10:49 a.m.
Ralf Mardorf wrote:
For my scripts I'm using aj-snapshot.
http://aj-snapshot.sourceforge.net/
https://aur.archlinux.org/packages/aj-snapshot/
http://packages.ubuntu.com/xenial/aj-snapshot
Interesting utility, however, the OP says that due to some
dynamic behavior in his system related to hotplugging, each
configuration will be unique.
--
Joel Roth
11:09 a.m.
On Tue, 14 Jun 2016 22:49:40 -1000, Joel Roth wrote:
Ralf Mardorf wrote:
The OP's description is vague. The OP needs to describe more precisely
what is changing and what always stays the same.
Some apps allow to enable/disable PIDs in the client name, resp. to use
individual names. Instead of hw:n it's possible to use audio device
names. By "options snd slots" in /etc/modprobe.d/alsa-base.conf it's
possible add placeholders. Assumed each configuration should be
completely unique, than it can't get restored. Some elements of the
connections always must have things in common. FWIW a script even
could launch QjackCtl. If one tool can't do it all, then a combination
of tools might be able to do it. It's even possible to change audio
device names, unfortunately not for MIDI devices.
Regards,
Ralf
For my scripts I'm using aj-snapshot.
http://aj-snapshot.sourceforge.net/
https://aur.archlinux.org/packages/aj-snapshot/
http://packages.ubuntu.com/xenial/aj-snapshot
Interesting utility, however, the OP says that due to some
dynamic behavior in his system related to hotplugging, each
configuration will be unique. 
11:18 p.m.
On Wed, 15 Jun 2016, worik wrote:
Apologies if this has been asked and answered already
but I can find no
solutns.
It is a missing part of the puzzle for sure.
My jackd set up is quite idiosyncratic. When I plug
in my external
sound gear I have to change the connections each time to get sound out.
I also use a variety of gear from the same computer each with its own
requirements.
I would like to be able to write a script that would start up jackd, set
the default sound IO to use jackd (I am on Ubuntu Studio) start a couple
of other applications and change the connections.
You probably really want to use jackdbus (what qjackctl on UbuntuSTudio
uses by default) so that you can change the system device the jack server
uses on the fly. See:
http://gareus.org/blog/jack2dbus for the best recipe I have seen for
detecting that a USB audio IF has been plugged in and switching jack over
to it.
The man page for jackd is not much help. I have found
some pages that
have part of the answer (e.., http://www.64studio.com/node/740) but
surely there is some direct way of manipulating jackd connections
without a mouse and GUI?
jack_connect and jack_disconnect? They would not be in the jackd manpage
because they are separate applications. (jack_control which you will
probably use in your script to change things has no man page :) just run
jack_control with no parameters for the help and play with the parameters
that seem to want to tell you info about how things are now)
--
Len Ovens
www.ovenwerks.net
11:55 p.m.
On Wed, 15 Jun 2016 14:18:38 -0700 (PDT)
Len Ovens <len(a)ovenwerks.net> wrote:
On Wed, 15 Jun 2016, worik wrote:
I don't know about ubuntu, but here on vanilla debian, jackdbus is quite a
headache for me.
Something (I haven't discovered what) is starting it up, and it connects to
onboard hdmi, if I then start qjackctl it sees jack running so doesn't apply
the setting I actually want, which is my KA6. It happens just infrequently
enough for me to forget and wonder why everything is connected but I'm getting
no sound :(
--
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
Apologies if this has been asked and answered
already but I can find no
solutns.
It is a missing part of the puzzle for sure.
My jackd set up is quite idiosyncratic. When I
plug in my external
sound gear I have to change the connections each time to get sound out.
I also use a variety of gear from the same computer each with its own
requirements.
I would like to be able to write a script that would start up jackd, set
the default sound IO to use jackd (I am on Ubuntu Studio) start a couple
of other applications and change the connections.
You probably really want to use jackdbus (what qjackctl on UbuntuSTudio
uses by default) so that you can change the system device the jack server
uses on the fly. See:
http://gareus.org/blog/jack2dbus for the best recipe I have seen for
detecting that a USB audio IF has been plugged in and switching jack over
to it. 
8:25 a.m.
On Wed, 15 Jun 2016, Will Godfrey wrote:
Are you sure it is not the other way around? Normally it is jackd that
gets started by some jack app and then qjackctl can no longer start
jackdbus which is pretty normal. Does your version of jack happen to be
from 2014ish? It was buggy and when an app started jackd in temporay mode
it did not exit when the app closed.
qjackctl can only control an instance of jackd it starts itself. However,
I can start jackdbus with jack_control and use qjackcontrol to stop and
then restart with different parameters. If perhaps you are thinking that
you often find "jackdbus auto" running using ps x or something like that,
do try jack_control status
If it says:
--- status
stopped
jackdbus is not the problem.... probably jackd is also running... try
killall -9 jackd and see if qjackctl starts working as you expect.
You either need a working jackd or you can chmod -x /usr/bin/jackd if you
don't want to do that. (I ran with jackd chmod -x for two years waiting
for the repos to catch up with no harm. BTW, jackdbus can do pretty much
anything jackd can using jack_control. Try it in a terminal with no
parameter for a help list as there is no man page :P
--
Len Ovens
www.ovenwerks.net
You probably
really want to use jackdbus (what qjackctl on UbuntuSTudio
uses by default) so that you can change the system device the jack server
I don't know about ubuntu, but here on vanilla debian, jackdbus is quite a
headache for me.
Something (I haven't discovered what) is starting it up, and it connects to
onboard hdmi, if I then start qjackctl it sees jack running so doesn't apply
the setting I actually want, which is my KA6. It happens just infrequently
enough for me to forget and wonder why everything is connected but I'm getting
no sound :(
11:07 p.m.
Thank you people.
Looks like jack_connect, jack_disconnect and jack_control are what I am
looking for.
cheers
Worik
On 16/06/16 18:25, Len Ovens wrote:
On Wed, 15 Jun 2016, Will Godfrey wrote:
Are you sure it is not the other way around? Normally it is jackd that
gets started by some jack app and then qjackctl can no longer start
jackdbus which is pretty normal. Does your version of jack happen to
be from 2014ish? It was buggy and when an app started jackd in
temporay mode it did not exit when the app closed.
qjackctl can only control an instance of jackd it starts itself.
However, I can start jackdbus with jack_control and use qjackcontrol
to stop and then restart with different parameters. If perhaps you are
thinking that you often find "jackdbus auto" running using ps x or
something like that, do try jack_control status
If it says:
--- status
stopped
jackdbus is not the problem.... probably jackd is also running... try
killall -9 jackd and see if qjackctl starts working as you expect.
You either need a working jackd or you can chmod -x /usr/bin/jackd if
you don't want to do that. (I ran with jackd chmod -x for two years
waiting for the repos to catch up with no harm. BTW, jackdbus can do
pretty much anything jackd can using jack_control. Try it in a
terminal with no parameter for a help list as there is no man page :P
--
Len Ovens
www.ovenwerks.net
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
--
Why is the legal status of chardonnay different to that of cannabis?
root(a)worik.org 021-1680650, (03) 4821804
Aotearoa (New Zealand)
I voted for love
You
probably really want to use jackdbus (what qjackctl on UbuntuSTudio
uses by default) so that you can change the system device the jack
server
I don't know about ubuntu, but here on vanilla debian, jackdbus is
quite a
headache for me.
Something (I haven't discovered what) is starting it up, and it
connects to
onboard hdmi, if I then start qjackctl it sees jack running so
doesn't apply
the setting I actually want, which is my KA6. It happens just
infrequently
enough for me to forget and wonder why everything is connected but
I'm getting
no sound :( 
18 Jun
18 Jun
12:35 a.m.
Greetings, Worik. I have been working out the same sort of problems for
a while; my functional solutions are all here:
http://lsn.ponderworthy.com
In order to handle a very wide variety of configurations, I'd have to
recommend this:
http://lsn.ponderworthy.com/doku.php/robust_session_management
which is not what I'm using now, because my direction has been in the
streamlining for live performance.
J.E.B.
On 06/14/2016 07:03 PM, worik wrote:
Friends
Apologies if this has been asked and answered already but I can find no
solutns.
My jackd set up is quite idiosyncratic. When I plug in my external
sound gear I have to change the connections each time to get sound out.
I also use a variety of gear from the same computer each with its own
requirements.
I would like to be able to write a script that would start up jackd, set
the default sound IO to use jackd (I am on Ubuntu Studio) start a couple
of other applications and change the connections.
The man page for jackd is not much help. I have found some pages that
have part of the answer (e.., http://www.64studio.com/node/740) but
surely there is some direct way of manipulating jackd connections
without a mouse and GUI?
Worik
--
Jonathan E. Brickman jeb(a)ponderworthy.com (785)233-9977
Hear us at http://ponderworthy.com -- CDs and MP3 now available!
<http://ponderworthy.com/ad-astra/ad-astra.html>
Music of compassion; fire, and life!!!
2878
days inactive
2880
days old
linux-audio-user@lists.linuxaudio.org
10 comments
7 participants
participants (7)
-
Joel Roth -
Jonathan E. Brickman -
Len Ovens -
Ralf Mardorf -
Roger -
Will Godfrey -
worik