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Auteur: kaffer@freemail.hu
Datum:  
Aan: dynebolic mailinglist
Onderwerp: Re: [dyne:bolic] Can't connect to Jack
rocko,

in jack for input and output you must specify audio card not midi. Midi
in and outs recognized automatically. If it doesn't show up in midi
window then try to replug the device. After 2 sec there will it be...

If you have a composite device - midi and audio - than first try to
replug it, sometimes only midi comes online from a composite card. Try
the '>' button to see if your card is online. You should see a list of
acessible alsa cards. Important thing is that you must not use a program
if it is using alsa directly, because jact can't connect to it because
it sees it reserved.
The other thing is that you must specify a sample rate in qjackctl - the
setup window - that your card is supported. Most USB 2.0 devices working
best with priority 4, 256 frames/period, 44100 or 48000 sample rate -
Behriger works with mostly 48000 better - and periods per buffer is 3.
In other cases for me jack locks up or even doesn't start. If you have a
slow PC - <2Ghz with 1 processor - that is usually not enough. If you
have a dual core 2 Ghz that it should be valued for a 1Ghz one for jack,
because current jack version in dyne 2 doesn't support multiprocessor.

hope this can help you

rocko wrote:
> How the heck are you guys connecting to Jack?
> I keep getting: "Cannot connect to jack server as client"
> Also getting: "Cannot start Alsa_pcm device".
>
> Does Dyne run on a real time kernel?
> I'm using hw1 as input and output, since this
> is my midi cable(usb), which is listed under connections.
>
> Iv'e googled and googled, lot of people have this error
> but no one seems to have a solution.
> Iv'e checked the limits.conf file and it
> has @audio-99-rtprio and @audio - memlock-1280000.
> only thing it's missing is the @audio -nice thingy.
>
> running as root, does root need to added to the audio group?
> If so how?
> Only see an "add user" icon not an edit user/groups.
> Any one have a solution?
>
>
>
> _______________________________________________
> dyne:bolic GNU/Linux http://dynebolic.org
> open wiki http://lab.dyne.org/DynebolicFaq
>
>
>