James Dunn wrote:
I'm having problems with DIO errors and glitchy audio with PD-extended 0.41.4 My computer is an HP Compaq nc6000 1.6Ghz laptop with 500mb RAM and I'm running Ubuntu 9.04. The kernel is 2.6.28-13-generic and I've tried using the realtime kernel which is 2.6.28-3-rt but it's no different. I've tried editing /etc/security/limits.conf to include the lines:
@audio - rtprio 99 @audio - nice -19 @audio - memlock unlimited
but this hasn't helped either.
I start jack with qjackctl and my settings are:
Realtime, No Memory Lock, Frames/Periods: 1024 sample rate 44100, Periods/Buffer: 2,.
Can anyone help?
Check if you have some kind of CPU frequency scaling going on. Ubuntu seems to install one by default. I found that when I force the machine to run at full speed all the time I get no more glitches (well the gui causes dropouts sometimes. I often minimize all the windows and switch to an empty desktop to be safe.)
Martin