In Fedora 12 with Planet CCRMA Jack Audio Connection Kit, does starting jack with qjackctl suspend pulseaudio?
If not, how can I add pulseaudio suspend (and resume) to qjackctl?
How can I tell if pulseaudio is running, is there a terminal command for pulseaudio status?
I have searched through the jackaudio.org, pulseaudio.org, qjackctl.sourceforge.net and other sites, and didn't find an obvious answer. http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workaroundshas some info but not about jack.
Thanks, Jeff Sandys
On Sat, Mar 6, 2010 at 3:03 PM, Jeff Sandys wrote:
In Fedora 12 with Planet CCRMA Jack Audio Connection Kit, does starting jack with qjackctl suspend pulseaudio?
If not, how can I add pulseaudio suspend (and resume) to qjackctl?
How can I tell if pulseaudio is running, is there a terminal command for pulseaudio status?
I have searched through the jackaudio.org, pulseaudio.org, qjackctl.sourceforge.net and other sites, and didn't find an obvious answer. http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workarounds has some info but not about jack.
Hi Jeff, This is probably not the best place to ask this, as most audio production folks (packagers, users, etc) don't care about pulseaudio. See e.g. http://ccrma-mail.stanford.edu/pipermail/planetccrma/2010-March/016510.html
It would be better if you ask this directly to pulseaudio developers.
Orcan
On Sat, 2010-03-06 at 12:03 -0800, Jeff Sandys wrote:
In Fedora 12 with Planet CCRMA Jack Audio Connection Kit, does starting jack with qjackctl suspend pulseaudio?
It depends. I don't know what happens if you use the Fedora jack package. If you have the Planet CCRMA jack package (based on jack2) the answer is yes, starting jackd will politely ask pulseaudio to release the card and jackd will be happy. When jackd exits the card is released and pulseaudio grabs it again.
If not, how can I add pulseaudio suspend (and resume) to qjackctl?
In fc11 where the interface between jackd and pulseaudio had some bugs I ended up writing a perl script that would do the right thing. I'm attaching it to this email for reference.
If the Fedora jack does not interface with pulseaudio you could (as root) "mv /usr/bin/jackd /usr/bin/jackd.bin" and then install the script as /usr/bin/jackd (don't forget to chmod it to 775). Of course this will "break" the rpm package of jackd so if you upgrade jackd you will need to redo the script again.
How can I tell if pulseaudio is running, is there a terminal command for pulseaudio status?
I have searched through the jackaudio.org, pulseaudio.org, qjackctl.sourceforge.net and other sites, and didn't find an obvious answer. http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workarounds has some info but not about jack.
You need to install pulseaudio-utils if it is not there already (BTW, you will need that for the script as well).
pactl stat
will tell you stuff about pulseaudio...
-- Fernando
On Sun, Mar 7, 2010 at 5:47 PM, Fernando Lopez-Lezcano < nando@ccrma.stanford.edu> wrote:
On Sat, 2010-03-06 at 12:03 -0800, Jeff Sandys wrote:
In Fedora 12 with Planet CCRMA Jack Audio Connection Kit, does starting jack with qjackctl suspend pulseaudio?
It depends. I don't know what happens if you use the Fedora jack package. If you have the Planet CCRMA jack package (based on jack2) the answer is yes, starting jackd will politely ask pulseaudio to release the card and jackd will be happy. When jackd exits the card is released and pulseaudio grabs it again.
That's what I thought but couldn't prove it. I have the ccrma jack, can't find jack in fedora. Using the PD latency test that loops back the output to the input, it shows twice the latency as calculated in qjackctl, which makes sense, once for D/A and again for A/D.
> If not, how can I add pulseaudio suspend (and resume) to qjackctl?
In fc11 where the interface between jackd and pulseaudio had some
bugs I ended up writing a perl script that would do the right thing. I'm attaching it to this email for reference.
If the Fedora jack does not interface with pulseaudio you could (as root) "mv /usr/bin/jackd /usr/bin/jackd.bin" and then install the script as /usr/bin/jackd (don't forget to chmod it to 775). Of course this will "break" the rpm package of jackd so if you upgrade jackd you will need to redo the script again.
I went straight from fedora 10 to 12 so I didn't try your perl script required for fedora 11.
How can I tell if pulseaudio is running, is there a terminal command for pulseaudio status?
I have searched through the jackaudio.org, pulseaudio.org, qjackctl.sourceforge.net and other sites, and didn't find an obvious answer.
http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workarounds
has some info but not about jack.
You need to install pulseaudio-utils if it is not there already (BTW, you will need that for the script as well).
pactl stat
will tell you stuff about pulseaudio...
-- Fernando
The reason I ask is I am planning to give a talk about music
programming with Planet CCRMA at LinuxFest NorthWest, http://linuxfestnorthwest.org/sessions/music-programming-planet-ccrma Fernando, I would appreciate your review of my slides when then are ready, I don't want to misrepresent CCRMA. Thanks,
-- Jeff Sandys
On Sun, 2010-03-07 at 23:26 -0800, Jeff Sandys wrote:
On Sun, Mar 7, 2010 at 5:47 PM, Fernando Lopez-Lezcano nando@ccrma.stanford.edu wrote: On Sat, 2010-03-06 at 12:03 -0800, Jeff Sandys wrote: > In Fedora 12 with Planet CCRMA Jack Audio Connection Kit, does > starting jack with qjackctl suspend pulseaudio?
It depends. I don't know what happens if you use the Fedora jack package. If you have the Planet CCRMA jack package (based on jack2) the answer is yes, starting jackd will politely ask pulseaudio to release the card and jackd will be happy. When jackd exits the card is released and pulseaudio grabs it again.That's what I thought but couldn't prove it. I have the ccrma jack, can't find jack in fedora.
The one in Planet CCRMA has a higher e-v-r so you won't see it by default if you have the Planet CCRMA repositories enabled. There is some yum incantation option that lets you see all versions, don't remember it.
Using the PD latency test that loops back the output to the input, it shows twice the latency as calculated in qjackctl, which makes sense, once for D/A and again for A/D.
> If not, how can I add pulseaudio suspend (and resume) toqjackctl?
In fc11 where the interface between jackd and pulseaudio had some bugs I ended up writing a perl script that would do the right thing. I'm attaching it to this email for reference. If the Fedora jack does not interface with pulseaudio you could (as root) "mv /usr/bin/jackd /usr/bin/jackd.bin" and then install the script as /usr/bin/jackd (don't forget to chmod it to 775). Of course this will "break" the rpm package of jackd so if you upgrade jackd you will need to redo the script again.I went straight from fedora 10 to 12 so I didn't try your perl script required for fedora 11.
> How can I tell if pulseaudio is running, is there a terminal command > for pulseaudio status? > > I have searched through the jackaudio.org, pulseaudio.org, > qjackctl.sourceforge.net and other sites, and didn't find an obvious > answer. > http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workarounds > has some info but not about jack. You need to install pulseaudio-utils if it is not there already (BTW, you will need that for the script as well). pactl stat will tell you stuff about pulseaudio...The reason I ask is I am planning to give a talk about music programming with Planet CCRMA at LinuxFest NorthWest,
http://linuxfestnorthwest.org/sessions/music-programming-planet-ccrma Fernando, I would appreciate your review of my slides when then are ready, I don't want to misrepresent CCRMA. Thanks,
Yes, no problem, let me know when you want me to take a look.
-- Fernando
-
Fernando Lopez-Lezcano -
Jeff Sandys -
Orcan Ogetbil