17 Oct
2007
17 Oct
'07
6:37 p.m.
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I started having some problems with xruns recently (once I started
going beyond working only with soundfonts in the soundcard) and it
turned out that jack was failing to acquire realtime privileges. This
turns out to be a known issue with Ubuntustudio. It can be remedied by
making sure you have lines such as the following somewhere in
/etc/security/limits.conf :
@audio - rtprio 99
@audio - memlock 512000
@audio - nice -10
Robert
porl sheean wrote:
i have had no end of trouble with this one. always get
glitchy
audio and *hundreds* of xruns. when i downloaded and used the
kernel from 64studio (still running ubuntu though) they went away.
i did a diff of the kernel configs and couldn't see anything that
explains it (although it has been a long time since i played around
in kernel config land, so some options may have eluded me... good
old gentoo days :). i can only assume that some patches are in one
of the kernel that are causing the issue, or maybe the fact that
gutsy's rt kernel has more drivers is causing conflict.
i will try the script mentioned earlier (rt-setup-report.sh) on
each and compare the difference. maybe it is as simple as an irq
priority or something.
- --
Robert Persson
ireneshusband(a)gmail.com
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