help, my Jack doesn't work anymore

Ralf Mardorf ralf.mardorf at
Sun Sep 16 10:09:36 UTC 2012

On Sun, 2012-09-16 at 10:19 +0200, Beppe Zupa wrote:
> hi friends, 
> i don't know what's happens on my notebook, but from a day to other
> the Jack on my ubuntustudio 12.04 has stopped to work.
> i attached the log at this email, in hope someone could help me.
> it seems that another app is locking audio resource, but i don't know
> how to find this app to kill.

Your card does support 22050Hz? Please try 44100Hz, but first run

jack_control exit
killall -9 -w jackd jackdbus

then run jackd, but add LC=C before the jackd command to force English
output, e.g.

LC=C jackd -dalsa -dhw:0 -r44100 -p128 -n2 -Xseq


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