[ubuntu-studio-devel] ubuntustudio controls

Ralf Mardorf ralf.mardorf at alice-dsl.net
Sat Jun 14 14:45:31 UTC 2014

If you add all users to the audio group, then some users might
experience issues, when they don't need RT audio, but they e.g. want to
use transparency windows with FLOSS 3D support, when a full preempted
(lowlatency) or kernel-rt is installed. Perhaps such a kernel already
does cause issues, even if the user isn't in the group audio. However,
my user always join this group and the RT vanilla kernels provide
doesn't drastically slow down GUI performance when using transparency,
but preempted and preempted rt kernels can not be used.

JFTR, keep in mind that for RT nice values are nonsense.
The only good values for RT audio are:

rtprio 	99
memlock 	unlimited

If you guess a nice value would be useful, then you need to set up
rtprio < 99, since there is no nice for RT.

Likely memlock could become an issue too.

And please search LAU, LAD, and I guess especially jack-devel threads
for frantic efforts to provide apps that automatically do set up jackd
latency settings. IT'S IMPOSSIBLE!

Don't write an app that fakes to support something, that cannot be

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