I would check which processes are running on the background, Ubuntu has scheduled some processes that interfere with the sound process. In my laptop it was specially problematic updatedb and some wifi related processes. Now I only get problems when i use the realtime kernel. the normal one works fine enough for me.
enrike
Derek Holzer(e)k dio:
I run PD as root (not sudo, but real root) for click-free operation. But Ubuntu has this weird thing where you can't be root, you can only sudo. Very strange... anyways, worth a try.
I also use fluxbox with very little else going on in the GUI. Spent almost a year tuning Linux to get really optimum performance for live gigs and recording situations, really the idea is that less is more. Ubuntu/Red Hat/SuSE etc just have too many processes (especially graphical ones that cause interruptions) running at once, IMHO.
best, D.
patrick wrote:
hi,
i don't use pd-extended, but i think it's almost the same. the only option missing is: -nosleep (useful for dual-core).
so be sure in qjackctl - setup: Realtime Periods/Buffer: 2 Sample Rate: 44100 (or more) Frames/Period: 256 (i am running at 64 without glitches)
then for pd: pd -rt -jack -r 44100 -nosleep -audiobuf 256 -channels 16 -alsamidi -mididev 1 etc...
and finally, be sure to edit /etc/security/limits.conf: @audio - rtprio 99 @audio - memlock unlimited @audio - nice -20
and of course, add yourself to audio group (reboot to be sure). let us know.
ah yes, a long time ago i was using icewm, because gnome was causing glitches in pd. but now it seems ok here.
pat
Atte André Jensen wrote:
Hi
I get clicks and "DIO errors" at random intervals under linux/ubuntu with jack (no xruns). I have a 17ms latency setup with jack and a realtime patched kernel and the rest of my audio setup works great with jack.
I installed pd from Pd-0.40.3-extended-20080628-ubuntu-gutsy-i386.deb
Any one else running a similar pd with a similar setup and either have it working or experience the same problems?
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list