I have tried with the pd config, with 40 ins and outs. (see attached

image) and works. And I also can run other apps like japa,

meterbridge, mocp, whatever.

Apparently the thing in jack is:

- each application can register as many in/outs as they demand (when

you change pd to 40/40) those appear in the qjackctl frontend

- there should be a maximum defined somewhere, I couldn't find it

easy, must be in jack documentation

- for the audio card, jack can only send ins/outs at the max of the

audio card true in/out - obviously =P

Report if you have any luck.

Best regards,

Pedro

On Sun, Aug 29, 2010 at 4:36 PM, Pedro Lopes <pedro.lopes@ist.utl.pt> wrote:

No my mistake, I was looking at device input channels, so their

directly binded to the soundcard, hence they are not virtual.

I'm gonna try another workaround...

On Sun, Aug 29, 2010 at 3:23 PM, Christoph Kuhr <christoph.kuhr@web.de> wrote:

which one do you mean?

i only have it in german...

there is something like system-input/output ports, but they configure

alsa, not jack itself ?!?

and another item max port, which is 256...

Am 29.08.2010 16:07, schrieb Pedro Lopes:

ahhh.. in qjack there's a setting (qjack > setup) for max input and

output ports, if you tell him nothing its running "default" which is

probably the values you reported.

On Sun, Aug 29, 2010 at 3:00 PM, Christoph Kuhr <christoph.kuhr@web.de> wrote:

Yes, i did so too...

It seems to me, that jack is limited on his total ports...

netsource 2i 24o

Pd 24i 8o

System 24i 26o

This is running so far

But any other jack client can connect anymor... Not jack rack, not japa

etc...

Has the number of ports to do with the used bufferlength in any way... I

mean do they influence each other?

Am 29.08.2010 um 13:57 schrieb Pedro Lopes <pedro.lopes@ist.utl.pt>:

I've just opened jack (via qjackctl) and pdextended (rt enabled in an

rt kernel).

It seems to work, I tryed 48 out and in and they all appear on qjack

frontend GUI, I can connect and route any combination of inputs.

What I did was go to Pd main GUI > media > Audio Settings > and change

number of channels numberbox to 48 in and same for out.

Have you tryed this way?

Best regards,

Pedro

p.s.: although its working Im testing this in a really lame netbook,

so It gets all scrambled and slow with so many ins. I can try in my

laptop and confirm if the aforementioned procedure works too.

On Sun, Aug 29, 2010 at 10:58 AM, Christoph Kuhr <christoph.kuhr@web.de>

wrote:

Hi everyone,

I have a problem using jack audio...

I want puredata to register 48channels of capture and 8 of playback.

But i get only 18channels running.

Else pd says:

"error: JACK: unable to connect to JACK server

JACK: jack returned status 17

error: JACK error: cannot deliver port registration request

error:JACK: can only register 18 input ports (instead of requested 48)"

Is pd limited to 26 channels IO?

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--

Pedro Lopes (ongoing MSc)

contact: pedro.lopes@ist.utl.pt

website:http://web.ist.utl.pt/Pedro.Lopes

--

Pedro Lopes (ongoing MSc)

contact: pedro.lopes@ist.utl.pt

website: http://web.ist.utl.pt/Pedro.Lopes

-- 

Pedro Lopes (ongoing MSc)

contact: pedro.lopes@ist.utl.pt

website: http://web.ist.utl.pt/Pedro.Lopes

<ScreenshotJack4040JapaPd.png>