[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.

Mac


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