Arch Linux

insane

Member

Registered: 2006-06-04

Posts: 106

Another one who can't configure jackd

Hi

I have been struggling with jackd for 3 hours and i can't configure it to work properly.

I have followed the wiki page and did a research in the web but i got more confused.

ALSA is working ok without jackd. When invoke command

aplay /usr/share/sounds/gaim/redalert.wav

i can hear sound. If i start jackd

/etc/rc.d/jack-audio-connection-kit start

and try to play that .wav file again i get:

#aplay /usr/share/sounds/gaim/redalert.wav
ALSA lib pcm_dmix.c:862:(snd_pcm_dmix_open) unable to open slave
aplay: main:547: audio open error: Device or resource busy

The oss2jack and fusd-kor packages are compiled with PKGBUILD files found in AUR.

In my /etc/rc.conf file i have

DAEMONS=(syslog-ng !hotplug !pcmcia network netfs !crond hplip cups alsa jack-audio-connection-kit oss2jack)

MODULES=(!snd-pcm-oss !snd_seq_oss kfusd)

in my /etc/conf.d/jack-audio-connection-kit i have the lines as in the wiki

SERVER_PARAMS="-R -s -d alsa"
DRIVER_PARAMS="hw:0 -p 64 -r 44100"

and my lsmod says:

[root@arch ~]# lsmod |grep ^snd
snd_intel8x0           29340  3
snd_ac97_codec         94624  1 snd_intel8x0
snd_ac97_bus            2176  1 snd_ac97_codec
snd_pcm                78084  4 snd_intel8x0,snd_ac97_codec
snd_timer              20100  1 snd_pcm
snd_page_alloc          8200  2 snd_intel8x0,snd_pcm
snd_mpu401              6368  0
snd_mpu401_uart         6528  1 snd_mpu401
snd_rawmidi            20512  1 snd_mpu401_uart
snd_seq_device          6924  1 snd_rawmidi
snd                    46432  12 snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401,snd_mpu401_uart,snd_rawmidi,snd_seq_device

Another thing that it came to my attention is that /etc/rc.d/oss2jack script mentions in some places os2jack. e.g. add_daemon os2jack and rm_daemon os2jack and i was getting "file not found" errors at startup. I changed these to oss2jack and the errors are gone.

Can someone please help me understand what i am doing wrong?

skottish

Forum Fellow

From: Here

Registered: 2006-06-16

Posts: 7,942

Re: Another one who can't configure jackd

I've gotten jack to work in the past with 'qjackctl'. I've never sucessfully got jack running without it. There is a version in the repositories, and getting help using it is as easy as searching the net.

test1000

Member

Registered: 2005-04-03

Posts: 834

Re: Another one who can't configure jackd

about the oss2jack script: sorry, that was my fault, i've uploaded new version of the oss2jack package with should be fixed script.

---

KISS = "It can scarcely be denied that the supreme goal of all theory is to make the irreducible basic elements as simple and as few as possible without having to surrender the adequate representation of a single datum of experience." - Albert Einstein

test1000

Member

Registered: 2005-04-03

Posts: 834

Re: Another one who can't configure jackd

and about aplay: Aplay only uses ALSA output.

kris|~$ pacman -Qo `which aplay`
/usr/bin/aplay is owned by alsa-utils 1.0.11-1

and thus won't work with oss2jack since jackd i think takes over the sounddevice to provide the mixing itself. Remember the part of the guide in the wiki taht meantion you have to change your apps to only use OSS output? well that means you can't use ONLY alsa apps either.

---

KISS = "It can scarcely be denied that the supreme goal of all theory is to make the irreducible basic elements as simple and as few as possible without having to surrender the adequate representation of a single datum of experience." - Albert Einstein

insane

Member

Registered: 2006-06-04

Posts: 106

Re: Another one who can't configure jackd

The reason i was trying to set up oss2jack was that i wanted to be able to hear sound from both flash and amarok. Anyway, in my many experiments i managed some times to hear sound from xmms with oss plugin but never from an alsa application. Finaly i gave up and now i run firefox with aoss. Most applications these days tend to use alsa anyway

sargon

Member

Registered: 2006-07-05

Posts: 18

Re: Another one who can't configure jackd

hm oss2jack is nice but if you want to route alsa sound into jack you need the alsa-plugins, there is a version in aur when i correct remeber.

After you installed you need to configure alsa to do what you want, there
are two way, first edit the global or edit the user specific alsa config and
insert :

pcm.jackplug {
        type plug
        slave { pcm "jack" }
}

pcm.jack {
        type jack
        playback_ports {
               0 alsa_pcm:playback_1
                1 alsa_pcm:playback_2
        }
           capture_ports {
               0 alsa_pcm:capture_1
                  1 alsa_pcm:capture_2
           }
}

for more information look : http://www.alsa-project.org/alsa-doc/do … p#jackplug