linuxaudio.org

On Sat, Feb 9, 2013 at 9:48 AM, Florian Paul Schmidt

 wrote:

quoted text
>

> Hi,

>

> I was a long term jackd1 user and my first action on a new linux

> installation (mostly using Ubuntu) was normally to remove pulseaudio as it

> was badly configured and/or buggy. Things have changed and I really started

> to like PA for everyday stuff. And then jackdbus came along which together

> with the device reservation API and the jackd sinks promised to make using

> these two things together more easy. This mostly works fine, except for the

> device reservation bug in PA which is easy to work around though:

>

> - Make sure no audio process is actively using the soundcard you want jackd

> to use

> - Run pulseaudio -k

> - Run jack_control start

>

>

> I have noticed some issues with jackdbus though:

>

> a] jack_control start sometimes doesn't work at all after the first time it

> failed to aquire the device. A killall -9 jackdbus is in order to restore it

>

> b] after some hours of operation jackdbus starts to eat 100% cpu on two of

> my four cores.

>

> Are these known issues? I use Ubuntu 12.10 and jackd:

>

Hi Flo,
I am also running Ubuntu 12.10 and using jackdbus. It is really nice

for things like playing along to youtube videos.. On my computer, I

noticed that jack does have a tendency to lockup after a while when

jackdbus is running. I had the feeling that it might be something to

do with latency, as I found it is impossible to start jack at very low

latencies with jackdbus running. I was using 128 samples which seemed

to be OK, but at that latency, the lockups occurred after some time. I

tried increasing latency to 256 samples/44.1k. Following this, it

seems to operate fine (at least I have had no more dropouts), but it

is all a bit fiddly to get it to work properly, and I would probably

disable pulse if I wanted to do serious recording etc without the

mixing capabilities that jackdbus adds..
James

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