diagnostic tools to trace the reason xruns are happening?

[Ralf Mardorf]

On Wed, 2011-06-22 at 19:24 +0200, bart deruyter wrote:
> there is no access for the audio group to the high precision event
> timer, nor for the real-time clock.

The regular timer should be automatically set to group audio during
startup, run

$ ls /dev/snd/timer -l

to check this.

Hpet needs to be set by you for startup. Or in a terminal emulation run

$ sudo chgrp audio /dev/hpet
$ sudo chmod g+rw /dev/hpet
$ sudo modprobe snd-hrtimer

to set it after startup.