[Ardour-Users] Leopard blues: convenient pics to check out.

Paul Davis paul at linuxaudiosystems.com
Sat Sep 20 01:54:21 PDT 2008

On Fri, 2008-09-19 at 22:39 -0400, Christopher Bailey wrote:
> Hello all,
> I'm on MAC OSX 10.5 (Leopard), MacBook Intel core duo.
> I wrote about a week ago about being uncertain of the settings for the
> machine and for Jack. Right now, I'm unable to hear sounds.
> So . . I've posted jpgs of all of my current settings, in Jack, Audio
> setup and Ardour.
> http://works.music.columbia.edu/~chris/ardiss/
> If anyone can take a look at these and see what I'm doing wrong, much
> appreciated. 

1) the "default system audio output" is pretty much irrelevant to JACK
except that it will use it by default under some circumstances
2) you have chosen to use the "Aggregate Device" with JACK, for input
and output. 
3) the input gain and output volume for this device are set at zero

> At the bottom is what things look like in Ardour (is the native
> version unable to display waveforms?), see the error messages in the
> bottom of the window.

the native version is perfectly able to display waveforms. where did
these regions come from? did you record them? from which device?

the message at the bottom comes from the fact that your session was, at
some point, using an instance of JACK that was connected to "Built-in
Audio". In the setup you've shown, JACK is now connected to "Aggregate
Device", which is not the same as the "Built-in Audio" device. Neither
JACK nor Ardour (not any CoreAudio app) can understand that they are
"related", so Ardour is just telling you "I cannot reconnect the click
track outputs to the same outputs you used last time". You can change
these by hand in the Preferences editor (under the "Click" tab), or you
can start a new session using your aggregate device.

Personal suggestion: I called my agg device: "Built-in". This is
memorable, closer to the name of the input-only or output-only devices
and shorter. 

Personal footnote: I still cannot describe my level of frustration with
Apple that for the first time in their history since they added audio
interfaces to their systems, they supplied drivers that do not support
input & output via the same device for the default audio interface. It
is just lunacy, and technically unnecessary.


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