Making Studio work with more than one DE

Hartmut Noack zettberlin at
Fri May 24 18:23:07 UTC 2013

Am 23.05.2013 15:32, schrieb Len Ovens:
> On Thu, May 23, 2013 12:21 am, Hartmut Noack wrote:
>> Am 23.05.2013 06:17, schrieb Len Ovens:
>>>> It should be easier to disable PA to a near-removed status though....
>>> Unload module-jackdbus-detect:
>>> pactl unload-module module-jackdbus-detect
>>> PA still takes up memory, but uses almost no cpu without that module.
>> The CPU-load would be tolerable, the problem is, what PA+dbus do at
>> startup. Is there a way to blacklist interfaces? Some command like : "PA
>> do not touch that device!"?
> Yes, run pavucontrol, select the last tab (configuration?) select the card
> you want PA to leave alone and turn it's "profile" to OFF.

Thanks for the hint, I did not know that. Sadly it looks, like the
problem resides deeper in the bowels of dbus: the problem prevails, only
KDE spits out "device is not available" messages....

Anyway: thanks again! with every shot in the dark we draw nearer a real
solution or as Spock puts it: "Once you have eliminated the impossible,
whatever remains, however improbable, must be the truth." ;-)

> Counter
> intuitively, I turn off the cards Jack is not going to want to use as I
> have found that the PA-jack bridge links the two cards. In other words, if
> PA uses the internal HDA (mine does not do good low latency due to HW
> problems) and Jack is using my USB IF, the problems I would have with the
> HDA, show up on the USB. The PA-Jack bridge forces PA to try to do the
> same latency as jack.
> I am not sure if that is clear. The thing to remember is that they do
> interact when bridged. This is not really a bug any more than the fact
> that a trailer will affect the way your car drives.

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