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chester_rockwell
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Joined: 27 Jun 2004
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PostPosted: Thu Jul 01, 2004 8:08 pm    Post subject: JACK on ppc Reply with quote

Hi,

Does anyone have any experience using JACK (the audio connection software) on ppc (or aluminum powerbook specifically)? I tried:
Code:
emerge jack
and it said it was masked. I tried the .ebuild file and that also didn't work. Can anyone give me some tips to install and run JACK on my pBook?

Thanks,

Chester
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blubbfisch
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PostPosted: Thu Jul 01, 2004 10:41 pm    Post subject: Reply with quote

Yes, works well!
I ran ardour-0.9_beta17, jamin, and SuperCollider for an extensive 10-hour-editing-session yesterday and it didn't crash once :-)))

(oh, in case you're wondering, there is no beta17-ebuild at the moment, just create one... it's worth it!)

Have fun*

Niklas
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tomasino
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PostPosted: Sat Jul 03, 2004 5:28 pm    Post subject: Reply with quote

Code:

*  media-sound/jack
      Latest version available: 3.0.0
      Latest version installed: [ Not Installed ]
      Size of downloaded files: 304 kB
      Homepage:    http://www.home.unix-ag.org/arne/jack/
      Description: A frontend for several cd-rippers and mp3 encoders
      License:     GPL-2

*  media-sound/jack-audio-connection-kit
      Latest version available: 0.98.1-r1
      Latest version installed: [ Not Installed ]
      Size of downloaded files: 689 kB
      Homepage:    http://jackit.sourceforge.net/
      Description: A low-latency audio server
      License:     GPL-2 LGPL-2.1


Maybe you want to emerge the second package ;)
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jsegel
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PostPosted: Mon Jul 05, 2004 6:29 am    Post subject: Reply with quote

blubbfisch wrote:
Yes, works well!
I ran ardour-0.9_beta17, jamin, and SuperCollider for an extensive 10-hour-editing-session yesterday and it didn't crash once :-)))


dude. i've been trying to set up my alu-book to work so i can use SC in gentoo and OSX. I'm having big problems with jack. start it up and it just spits out xruns. what's your secrets?
plus i still can't get sound out of anything except the headphone jack.

SC compiles ok, though there are some warnings at ./linux/bootstrap, have you tried s. kersten's sclangx? i can't compile it using xorg, something's not finding the right gl libs i think.
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Immortal Q
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PostPosted: Mon Jul 05, 2004 6:31 am    Post subject: Reply with quote

jsegel: have you tried the latest kernel snapshots? Supposedly there are some Aluminum PB mixer fixes in the bk6+ patchset.
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blubbfisch
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Joined: 19 Oct 2003
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PostPosted: Mon Jul 05, 2004 7:18 am    Post subject: Reply with quote

Quote:

dude. i've been trying to set up my alu-book to work so i can use SC in gentoo and OSX. I'm having big problems with jack. start it up and it just spits out xruns. what's your secrets?
plus i still can't get sound out of anything except the headphone jack.


Errm, which Alu-book do you have? (I'm on a 1.25GHz first Alu, yes, bugger that display...)

I start jack like this:

USB-Audio:
jackd -R -d alsa -d emi26 -r 48000 -S -H -p 1024 -n 4

or internal:
jackd -R -d alsa -d snapper -r 44100 -S -H

Quote:

SC compiles ok, though there are some warnings at ./linux/bootstrap, have you tried s. kersten's sclangx? i can't compile it using xorg, something's not finding the right gl libs i think.


Dunno, couldn't be bothered, I use the emacs mode, although I'm a vim-user at heart ;-)

Oh, and I either run the gentoo-dev kernel or the one straight from Bitkeeper.

Have fun*

Niklas
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jsegel
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PostPosted: Mon Jul 05, 2004 8:19 pm    Post subject: Reply with quote

oh snapper. ok, i see, this required a few patches. done now. :D

so i stole the last diff from the 2.6.7-bk6 patch, and the 7447 cpu patch. this makes an ENORMOUS difference! now sound works, jack works, /proc/cpu says 1495 bogomips for this 1.5 ghz alu-powerbook. (though isn't that bogomips thingy supposed to report clock*2 for ppc? whatever. it said 747 before.)

thanks.


as for sclangx, it's by the guy that made the emacs lisp interface also, (i use emacs too). just a gui lib, but what's cool is it starts up a server control box like the os x version does. that's nice.
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blubbfisch
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PostPosted: Tue Jul 06, 2004 11:15 pm    Post subject: Reply with quote

jsegel wrote:

as for sclangx, it's by the guy that made the emacs lisp interface also, (i use emacs too). just a gui lib, but what's cool is it starts up a server control box like the os x version does. that's nice.


(sidenote, I used to go to uni with Stefan...)
Yeah, I played around with sclangx, compiles, works, all is well :-)

Server control box is there, SCUMWindow class doesn't seem to work, though :-(

Have fun*

Niklas
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chester_rockwell
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PostPosted: Thu Jul 15, 2004 4:12 pm    Post subject: Reply with quote

Hello,

I now have JACK, ardour, SC3 running fine on my alu- pBook...but only as root. I have read that this is due to realtime privelages, and that a solution is to install the realtime-lsm module from here.

I built the module, then installed it with
Code:
modprobe realtime gid=18 allcaps=1
but I still got the same "could not connect to JACK server as client" error message. Does anyone have JACK/qjackctl running as a regular user? What kernel or what special configuration are you using?

Lastly, whenever I start qjackctl, I get the message "Could not open ALSA sequencer as client. MIDI patchbay will not be available." Is this because I have no MIDI interface connected, or is this because of the same realtime privelages issue?

by the way:

1.25 GHz 15" alu-pBook
2.6.7-gentoo-r8 kernel
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jsegel
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PostPosted: Mon Jul 19, 2004 7:21 pm    Post subject: Reply with quote

i had everything working and then this also happened to me. i was going to respond a week ago, but it all went south.
anyway, i don't know what's going on with the alsa seq. /dev/snd/seq exists. i downloaded alsa-1.0.5 sources to get the snddevices script, ran it (it creates all the alsa things in /dev) and then of course starting jack it has its midi connections. reboot and they're gone again.

anyway, i had the same "could not connect to Jack server" after rebuilding a kernel - with the snapper sound patch for my powerbook. i KNOW it will work...
trying to start alsamixer says "no mixer elems found"
so what i discovered is that there is now a new card that is being mistaken for the hw:0, maybe a modem? so running alsamixer -c1 worked, so setting jack to start using hw:1 is now the internal sound.
try that...?
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BennyP
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PostPosted: Thu Jul 22, 2004 8:49 pm    Post subject: Reply with quote

You made my day! Now I'm really ready to get down and dirty with my soon-to-be-new iBook. The first thing ILL DO WILL BE TO RIP OFF THE KEYCAPS AND ARRANGE THEM IN DVORAK +)
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jsegel
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PostPosted: Thu Jul 22, 2004 9:06 pm    Post subject: Reply with quote

glad to help, if indeed i have. (finally!)

Quote:

The first thing ILL DO WILL BE TO RIP OFF THE KEYCAPS AND ARRANGE THEM IN DVORAK +)


oucch.
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