On Tue, 02 Sep 2008 08:14:02 +0200Atte André Jensen <atte.jensen@xxxxxxxxx> wrote: > Hi> > My old thinkpad running ubuntu 7.10 died and I'm now on a new laptop > (toshiba satellite) with ubuntu 8.04.> > I'm having alot of trouble getting good realtime performance, not> sure what's caused by ubuntu or the laptop.> > I installed "linux-rt" which seems to have provided some kind of > realtime kernel:> atte@vestbjerg:~$ uname -r> 2.6.24-19-rt> > I also edited /etc/security/limits.conf to contain:> @audio - prio 99> @audio - rtprio 99> @audio - nice -10> > I can run jack with rt-priority 80, but am getting x-runs and audio > breakup even at light load and conservative latency (17ms).> > One of the things I have a feeling might be causing trouble is > pulseaudio. Should this be disabled, and if so how?> > What else am I missing?> > NB: I'm mostly testing this with eXT2, which performed great on my> thinkpad.> > NB2: This is a dualcore, 2Ghz, 2Gb ram machine with a fresh ubuntu> 8.04> > Any ideas appreciated> The most important piece of information when it comes to audio troublesis missing: audio interface?The next one: jack settings?In case you're using you laptops on-board sound chip and it is a HDAIntel, use periods/buffer 3.If you do use the on-board-thing, 17ms is not conservative. > @audio - prio 99This one is new to me. I don't know if it hurts but it is certainly notnecessary.What you missed are memlock settings,there's a nice app that will allow you to set it as %, called'Ubuntustudio Controls', and I recommend to set it to 76% (to stopardour from complaining). Best Regards, Philipp_______________________________________________Linux-audio-user mailing listLinux-audio-user@xxxxxxxxxxxxxxxxxxxxxxxx://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
