pulse audio & jack

Wed Nov 14 19:00:51 UTC 2012

On Wed, Nov 14, 2012 at 10:42 AM,
<ubuntu-studio-users-request at lists.ubuntu.com> wrote:

>
> When replying, please edit your Subject line so it is more specific
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> Today's Topics:
>
>    1. Problem burning to DVDs (David King)
>    2. Re: Problem burning to DVDs (Mac)
>    3. Re: Problem burning to DVDs (Ralf Mardorf)
>    4. Re: Problem burning to DVDs (Carl Raeside)
>    5. pulse audio & jack (Mac)
>    6. Re: pulse audio & jack (Ralf Mardorf)
>    7. Re: pulse audio & jack (Kaj Ailomaa)
>    8. Re: pulse audio & jack (Josep Pujadas i Jubany)
>
>
> ----------------------------------------------------------------------
>
> ------------------------------
>
> Message: 5
> Date: Wed, 14 Nov 2012 10:27:09 -0500
> From: Mac <macdroid53 at gmail.com>
> To: Ubuntu Studio Users Help and Discussion
>         <ubuntu-studio-users at lists.ubuntu.com>
> Subject: pulse audio & jack
> Message-ID:
>         <CAHEqMkE9Eni=ehTc6Jbeyk9tEuBJ3554skn6AAgqB3NQmRXjwQ at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> When I installed 12.04 UbStudio I was pleased to see pulse audio
> played nice with jack. (i.e. when qjackctl starts pulse sinks/sources
> show up by default).
>
> Is there any documentation or overview of how this is accomplished?
> I'd like to understand and possibly modify what shows up, etc.
>
> Or, can anyone post some ideas on where to start? (I googled a bit
> with little success.)
>
> On a related note: if I run/start qjackctl things work fine. If I then
> tell qjackctl to stop and choose yes/continue when it prompts about
> clients still connected it can't connect when I attempt to start it
> again. The message says it can't connect(or start) to the server.
>
> I'm guessing there are stale processes that are not allowing the
> restart, but, I'm not real sure where to begin to determine how to
> correctly stop jack so it doesn't get it's knickers in twist.
>
> Regards,
> Mac
>
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 14 Nov 2012 18:11:33 +0100
> From: Ralf Mardorf <ralf.mardorf at alice-dsl.net>
> To: ubuntu-studio-users at lists.ubuntu.com
> Subject: Re: pulse audio & jack
> Message-ID: <1352913093.2050.67.camel at precise>
> Content-Type: text/plain; charset="UTF-8"
>
> On Wed, 2012-11-14 at 10:27 -0500, Mac wrote:
>> When I installed 12.04 UbStudio I was pleased to see pulse audio
>> played nice with jack. (i.e. when qjackctl starts pulse sinks/sources
>> show up by default).
>>
>> Is there any documentation or overview of how this is accomplished?
>> I'd like to understand and possibly modify what shows up, etc.
>>
>> Or, can anyone post some ideas on where to start? (I googled a bit
>> with little success.)
>>
>> On a related note: if I run/start qjackctl things work fine. If I then
>> tell qjackctl to stop and choose yes/continue when it prompts about
>> clients still connected it can't connect when I attempt to start it
>> again. The message says it can't connect(or start) to the server.
>>
>> I'm guessing there are stale processes that are not allowing the
>> restart, but, I'm not real sure where to begin to determine how to
>> correctly stop jack so it doesn't get it's knickers in twist.
>>
>> Regards,
>> Mac
>>
>
> Perhaps a DBUS thingy? If you start qjackctl, it will launch the script
> in /usr/bin, this script will turn off pulseaudio and than run
> qjackctl.real, the actually/real qjackctl. So when using qjackctl,
> pulseaudio shouldn't cause issues. DBUS might cause issues.
>
> Regards,
> Ralf
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Wed, 14 Nov 2012 18:20:59 +0100
> From: "Kaj Ailomaa" <zequence at mousike.me>
> To: "Ubuntu Studio Users Help and Discussion"
>         <ubuntu-studio-users at lists.ubuntu.com>
> Subject: Re: pulse audio & jack
> Message-ID: <op.wnrw49pa2rg3it at melete>
> Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes
>
> On Wed, 14 Nov 2012 16:27:09 +0100, Mac <macdroid53 at gmail.com> wrote:
>
>> When I installed 12.04 UbStudio I was pleased to see pulse audio
>> played nice with jack. (i.e. when qjackctl starts pulse sinks/sources
>> show up by default).
>>
>> Is there any documentation or overview of how this is accomplished?
>> I'd like to understand and possibly modify what shows up, etc.
>>
>
> The way it's automatically done, is by the combination of qjackctl using
> dbus support with jackd2 (i.e. starting jackdbus), and having
> pulseaudio-module-jack installed.
> You can check out the source for pulseaudio-module-jack for specifics.
>
>> Or, can anyone post some ideas on where to start? (I googled a bit
>> with little success.)
>>
>> On a related note: if I run/start qjackctl things work fine. If I then
>> tell qjackctl to stop and choose yes/continue when it prompts about
>> clients still connected it can't connect when I attempt to start it
>> again. The message says it can't connect(or start) to the server.
>>
>> I'm guessing there are stale processes that are not allowing the
>> restart, but, I'm not real sure where to begin to determine how to
>> correctly stop jack so it doesn't get it's knickers in twist.
>>
>
> This is a bug, that hopefully will be fixed in both 12.04 and 12.10 soon.
>
>> Regards,
>> Mac
>
>
>
> ------------------------------
>
> Message: 8
> Date: Wed, 14 Nov 2012 19:41:46 +0100
> From: Josep Pujadas i Jubany <jpujades at gmail.com>
> To: Ubuntu Studio Users Help and Discussion
>         <ubuntu-studio-users at lists.ubuntu.com>
> Subject: Re: pulse audio & jack
> Message-ID:
>         <CAJ3dLCB+zv=GCyZsTUbvmb_1dwECJn=9u=gjLGBfrOsArkFq3g at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> You need to stop/start/stop PulseAudio when using JACK.
>
> http://translate.google.com/translate?hl=en&sl=ca&tl=en&u=http%3A%2F%2Fwww.bellera.cat%2Fjosep%2Fumm%2Fconfiguraci_de_jack.html
>
> Like this if you have applications only compiled for using with PulseAudio
> they will work also with JACK.
>
> Be careful with que scripts code. One of them is "Language system sensitive.
>
> Tested/proved for Ubuntu Desktop 10.04 and also for 12.04.
>
> Regards,
>
> Josep Pujadas-Jubany
>
>
> 2012/11/14 Kaj Ailomaa <zequence at mousike.me>
>
>> On Wed, 14 Nov 2012 16:27:09 +0100, Mac <macdroid53 at gmail.com> wrote:
>>
>>  When I installed 12.04 UbStudio I was pleased to see pulse audio
>>> played nice with jack. (i.e. when qjackctl starts pulse sinks/sources
>>> show up by default).
>>>
>>> Is there any documentation or overview of how this is accomplished?
>>> I'd like to understand and possibly modify what shows up, etc.
>>>
>>>
>> The way it's automatically done, is by the combination of qjackctl using
>> dbus support with jackd2 (i.e. starting jackdbus), and having
>> pulseaudio-module-jack installed.
>> You can check out the source for pulseaudio-module-jack for specifics.
>>
>>  Or, can anyone post some ideas on where to start? (I googled a bit
>>> with little success.)
>>>
>>> On a related note: if I run/start qjackctl things work fine. If I then
>>> tell qjackctl to stop and choose yes/continue when it prompts about
>>> clients still connected it can't connect when I attempt to start it
>>> again. The message says it can't connect(or start) to the server.
>>>
>>> I'm guessing there are stale processes that are not allowing the
>>> restart, but, I'm not real sure where to begin to determine how to
>>> correctly stop jack so it doesn't get it's knickers in twist.
>>>
>>>
>> This is a bug, that hopefully will be fixed in both 12.04 and 12.10 soon.
>>
>>  Regards,
>>> Mac
>>>
>>
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> End of Ubuntu-Studio-users Digest, Vol 67, Issue 12
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Hi,

Months ago (before I started using 12.04) I found the following
instructions useful to accomplish the pulse + jack automatic
connection:

http://flavioschiavoni.blogspot.com/2010/05/jack-e-pulse.html
(in portuguese, but easy to follow I suppose)

I'm not sure this is an answer to your question, but it may be of interest.

Best,

Bruno