State of Jack as a full pulsaudio replacement

Len Ovens len at
Sun May 6 23:54:14 UTC 2012

On Sun, May 6, 2012 11:01 am, Luke Kuhn wrote:

> Best fix might be a better control for pulseaudio, one that can turn it on
> or off, and it will stay on or stay off and not respawn. This would have
> to be combined with a volume control that works both with and without
> pulseaudio running.

Pulse does have a method of not respawning. Two actually, respawning can
be turned off in PA's config. or it has a stop while running this program
option. pasuspender is the command. It does leave PA in memory though. The
other thing I have thought of is to restart PA with a different config
file with nospawn set. Kill it and then restart from the normal config
when finished non-pulse work.

My big find for me today is that I have had an xrun per minute. Always at
the same second of the minute. Didn't seem to matter what the latency was
set to. I tried changing irq priorities etc. I tried turning off the power
to the wireless... which made it worse... xrun every 5 sec.

Rebooted with netmanager turned off. Problem is gone. Jack set to 5.8 ms
latency. PA-jack bridge running. Watched a full length movie at full
screen. After 3.5 hours there are two xruns. One from movie start (PA port
open) and one at movie end (PA port close). This is an Acer aspire one
netbook with the atom. I'll have to see how easy it is to turn the network
manager off and on on the fly. 5.8ms seems to be the best the hardware can
do, jack will not even start with it set lower although I have managed to
change it on the fly with guitarix to a lower value.... it did run for a
while, but then crashed ;-)

Len Ovens

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