[PD] Freezes with Pd-Extended and Jack

Ivica Bukvic ico at vt.edu
Sat Nov 24 04:15:00 CET 2012


That is the regression I spoke of in pd 0.43 branch. Try pd-l2ork...
On Nov 23, 2012 9:27 PM, "Esteban Viveros" <emviveros at gmail.com> wrote:

> Ops...  I did a better test, and doing first open Pd and then I open Jack.
> Now The DSP function work well, but I don't have sound...
>
> On messages box I have:
>
> 00:18:26.321 Patchbay deactivated.
>
> 00:18:26.373 Statistics reset.
>
> 00:18:26.388 ALSA connection change.
>
> 00:18:26.440 JACK connection change.
>
> 00:18:26.467 Client activated.
>
> 00:18:52.992 JACK connection graph change.
>
> 00:18:53.134 JACK connection change.
>
> 00:19:38.102 Client deactivated.
>
> 00:19:38.103 Post-shutdown script...
>
> 00:19:38.103 dreamstudio-restart-pulseaudio
>
> # making sure pulseaudio will restart if it crashes
>
> # starting pulseaudio
>
> # connecting pulseaudio to JACK
>
> Falha: A inicialização do módulo falhou
>
> Falha: A inicialização do módulo falhou
>
> 00:19:41.798 Post-shutdown script terminated with exit status=256.
>
> 00:19:44.297 JACK connection change.
>
> 00:19:44.311 Client activated.
>
> 00:20:38.543 JACK connection graph change.
>
> 00:20:38.693 JACK connection change.
>
> 00:20:42.648 ALSA connection graph change.
>
> 00:20:42.708 ALSA connection change.
>
> 00:20:42.709 ALSA connection graph change.
>
> 00:20:42.910 ALSA connection change.
>
> 00:20:45.334 JACK connection graph change.
>
> 00:20:45.514 JACK connection change.
>
> 00:20:52.993 JACK connection graph change.
>
> 00:20:53.014 Buffer size change (64).
>
>
> What can I do now?
>
>
> 2012/11/23 Esteban Viveros <emviveros at gmail.com>
>
>> Hmmm... I can understand now...
>>
>> Well.. I tried now the version of Jack on kxstudio testing ppa<https://launchpad.net/~kxstudio-team/+archive/testing>and the problem is the same... :(
>>
>> This ppa was install jack2, jackd and jackdfirewire packages on version
>> 1.9.9  but the package libjack-jack2.0 is mantained on version 1.9.8
>>
>> The next step will be to compile jack packages on version 1.9.9
>>
>> Ivica, or anyone, you have some information how can I compile that? For
>> that I need some help.
>>
>> Regards
>>
>>
>> 2012/11/23 Ivica Ico Bukvic <ico at vt.edu>
>>
>>> See below (from the linux-audio-user list):****
>>>
>>> ** **
>>>
>>> Re: [LAU] question about jackdmp's ability to detect its soundcard has
>>> disconnected****
>>>
>>> Could this be the difference between 1.9.8 and git version?****
>>>
>>> On Oct 29, 2012 12:10 PM, "Robin Gareus" <robin at gareus.org> wrote:****
>>>
>>> On 10/29/2012 03:55 PM, Ivica Ico Bukvic wrote:
>>> > All,
>>> >
>>> > I noticed since upgrading to Ubuntu 12.04 that the default Jack server
>>> is
>>> > jackdmp (v.1.9.8). Please correct me if I am wrong but my
>>> understanding this
>>> > is the smp-enabled version 2 that is being developed in parallel with
>>> 1.x
>>> > series of regular jack.
>>>
>>> correct. They are also API and ABI compatible.
>>>
>>> > Either way, one of my concerns is that while in the old jack when one
>>> > accidentally pulled the soundcard jack was trying to talk to (e.g. a
>>> USB
>>> > soundcard), the jack would gracefully stop.
>>>
>>> In my experience it stopped but never gracefully (ie it crashed). but
>>> it's been a while since I used jack1.
>>>
>>> > The new version (and this could
>>> > be Ubuntu quirk) instead of stopping is pegged in some kind of a
>>> spinlock
>>> > that often times locks up the machine (this may be in part since I am
>>> > running a lowlatency kernel with audio group given priority) and at
>>> times
>>> > keeps it operational while hogging the cpu and making the computer
>>> barely
>>> > responsive until jackd is killed. Apps connected to jack that I tested
>>> so
>>> > far are also stuck in a loop waiting for a response from jack
>>> (although this
>>> > could be the app's shortcoming)--jack never broadcasts a signal that
>>> it has
>>> > lost the soundcard (AFAICT). FWIW I am running jackdmp through
>>> qjackctl...
>>> > Any thoughts on this matter would be most appreciated.
>>> >
>>>
>>> I can't reproduce this. jack2 stops the backend when the device is
>>> disconnected. You can switch to a new backend using jack_control
>>> (sending some Dbus messages to jackd) without re-starting jackd. No CPU
>>> hogging here. - I'm running jack2 - aka 1.9.9.4 from git.
>>>
>>> robin****
>>>
>>> ** **
>>>
>>
>>
>>
>> --
>>
>> Esteban Viveros
>>
>> (27) 8815 7170
>> (27) 3066 0359
>> (11) 95761 4125
>> (11) 2738 7868
>>
>> www.bandpage.com/estebanviveros <http://soundcloud.com/estebanviveros>
>>
>> https://www.facebook.com/estebanviveros.art
>>
>> http://www.papodecompositor-es.blogspot.com.br/
>>
>> http://expurgacao.art.br/
>>
>>
>
>
> --
>
> Esteban Viveros
>
> (27) 8815 7170
> (27) 3066 0359
> (11) 95761 4125
> (11) 2738 7868
>
> www.bandpage.com/estebanviveros <http://soundcloud.com/estebanviveros>
>
> https://www.facebook.com/estebanviveros.art
>
> http://www.papodecompositor-es.blogspot.com.br/
>
> http://expurgacao.art.br/
>
>
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