[LAU] Jackd and Other Alsa applications at the same time.

Sampo Savolainen v2 at iki.fi
Mon Feb 18 07:48:35 EST 2008

Quoting Arda Eden <ardaeden at gmail.com>:

> While Jackd is runnning, other applications like Amarok and system sound
> alerts cannot use Alsa at the same time.
> But JACK diagram given in it's web site shows that any non-jackified
> application can use Alsa Userspace Library at the same time.
> And, Sampo Savolainan told me that, other programs can use the ALSA
> library,
> but jack needs exclusive
> access to the audio hardware it uses. Nothing is stopping a non-jack
> program
> to access other sound interfaces you might have in your system.
> How is this exclusive access given to Jack ?

Exclusive access is not given to it. Jack takes exclusive access when you
start it. If it's unable to get exclusive access it will fail to start.

Once it has started, other programs will be unable to access that audio
device. The device is released when jack stops.



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