State of Jack as a full pulsaudio replacement

Len Ovens len at
Mon May 7 19:07:48 UTC 2012

On Mon, May 7, 2012 6:42 am, Brian David wrote:
> On Sun, May 6, 2012 at 6:54 PM, Len Ovens <len at> wrote:
>> Rebooted with netmanager turned off. Problem is gone.
> I've had this same problem with netmanager in the past.  It's one of the
> reasons why Ubuntu Studio use to come without netmanager.  Back then,
> however, there was an alternative GUI to set up networks, which I don't
> think is the case now.  Any install without netmanager will probably have
> to set-up networks via the command line, which is not exactly convenient.
> :)

The way it works for me is that the machine that has no problem with NM
doesn't need it. Static IP, set once by editing file, turn off NM forever.
But that box had no problem with NM. The netbook on the other hand can be
expected to want NM to work because it is portable and the settings might
change by the day or even more often for someone traveling. That is the
machine that needs NM, but also has a problem with it.

Am I trying to do too much with this box? certainly more than it has been
designed for. But that has been part of the whole linux thing from day

I think I need to break this down to realistic workfows. there are some
workflows that need low latency. Like live effects or softsynth kinds of
things. Shutting down NM for any live use like that should not be a
problem. This would be pushing this kind of machine to it's limits anyway.
The odd xrun is not going to be a real problem or if it is, use better

Recording... stuck with USB... probably USB1.1 seeing as usb2.0 drivers
are iffy at best. Certainly only two channels for the internal audio IF.
In any case an external preamp is needed and the input should be monitored
from there, not the computer sound output. (even with high end hardware)
some extra latency should be ok even for tracking as most modern DAWs know
how to deal with delay so the tracks are synced. Ardour defaults to 46msec
latency and my netbook seems to be ok with half that.

So the answer is to configure for the use. The idea of having a record
mode should probably changed to having a low latency mode. One that is
configurable to the needs of the hardware and use intended.

Just thinking out loud...

Len Ovens

More information about the Ubuntu-Studio-devel mailing list