[LAU] Ubuntustudio 12.04 audio?

Mac ussndmac at charter.net
Mon Aug 20 10:45:23 UTC 2012

On Mon, Aug 20, 2012 at 1:05 AM, Len Ovens <len at ovenwerks.net> wrote:
> On Sun, August 19, 2012 1:10 pm, Mac wrote:
>> First glance appears that I may be able to bypass the alsa bridge with
>> what's showing up in the patch in UBS12.04. But, I need to determine
>> where and how the pulse connections in qjackctrl are being made. The log
>> doesn't show a script being run by jack start.
> They are being made by pulse. Any config changes will also have to be made
> in pulse. The fact that capture/playback 0 is being called no number would
> be firewire I would guess. I know less about FW than I would like to (less
> about pulse setup than I would like to as well). However, Pulse expects to
> live in the ALSA world where captures start at 1 not 0 (the 0 being blank
> seems to be a standard linux kernel thing).
> None of the stuff in /etc/pulse seems to be helpful. I do wonder if it
> would be possible to add a jack file to
> /usr/share/pulseaudio/alsa-mixer/profile-sets/
> I will see what I can find out. (I have other reasons for finding this
> stuff out)

So far my poking around on the net indicates that dbus service between
pulse and jack are involved. (if you uncheck the start dbus in
qjackctrl only the firewire source/sinks show up).

The pulse source/sinks are provided by pulseaudio-module-jack.

What control over how things are named or created is still
unknown...to me at least.


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