[LAU] Diagnosing JACK

[Lorenzo Sutton]

Hi,

On 09/10/2015 08:05, worik wrote:
> Friends
>
> I am having trouble with JACK and I have no idea how to start diagnosing
> my problems.

> I get no sound through it at all today, neither input nor output.
[...]
>
> I have had "pulseaudio" apear in the connections window, I was not
> seeing that when the system was working.

Pulsaudio input/output appearing in the connections window without any 
explicit intervention on your side might be related to enabling D-bus?

Now, if that is the case, how d-bus got enabled without you explicitly 
doing it or if this could really be the cause of your problem is another 
matter, but maybe this could be a useful pointer.

>
> Where do I start?  For a start where does JACK put its logs?

Another really trivial yet easily overlooked suggestion is some 
application (firefox - or even worst flash-plugin, etc.) 'capturing' the 
audio card and preventing jack to start, but in your case if I 
understand correctly jack does start?

Finally if there are no evident error messages etc. I know this sounds 
trivial again but I've fallen to it many times... maybe it's not a 
jack/OS problem at all: e.g. volume turned down on some hardware knob? 
Mute button on speakers, sound card etc.? Cable disconnected?

Lorenzo.

>
> I have the correct device selected in the setup tab
>
> Worik
>