Thanks for the info, by testing, error and trial, it seems to be fixed so far by using jackd -c s. I've figured out my chipset has no hpet.
I've edited a config file to give ohci1394 higher priorities since my soundcard is firewire based. But it only had the opposite effect, strangely enough, so I changed it back to it's default state. I've managed to set the frequency scaling to 'performance' by default. My machine is no laptop, so I think that shouldn't be an issue for the temperature, apart from power consumption :-). I also noticed rakarrack caused errors x-runs, just by handling it's interface, moving a slider, clicking on a button. I don't know why, it was no problem in the past. Anyways, starting jackd with -c s was a major improvement so far. Grtz, Bart http://www.bartart3d.be/ 2011/12/7 Gustin Johnson <[email protected]> > hpet is a hardware timer included on most machines since 2005 > (http://en.wikipedia.org/wiki/High_Precision_Event_Timer) > > This is generally what I use. > > You may also want to disable frequency scaling as I have noticed that > xruns seem to occur when the CPU changes frequencies. There should be > an applet for that (there was under Gnome). I use KDE which does not > seem to have such an applet, so I wrote a quick little script to > handle that. > > I also assume that you meant that you have already installed and tweaked > rtirq? > > Hth, > > > On Mon, Dec 5, 2011 at 3:02 PM, bart deruyter <[email protected]> > wrote: > > Hi all, > > > > I've managed to set up my system oneiric, 64 bit to run fairly well, > though > > I have noticed I still have a problem with a certain setup. > > > > When using two instances of rakarrack, and hydrogen, I let hydrogen run > > through one instance of rakarrack, then one input of my sound card for my > > guitar through the other instance of rakarrack. > > > > This works fairly well, but then I set hydrogen as sync master, and > enable > > the tempo sync from rakarrack to jack and I start to get x-runs. > > > > Is there something I can do to improve my system apart from those on the > > linuxmusicians wiki? > > > > I already modified the settings for IRQ handling, and set ohci1394 (sound > > card is firewire based) as second in the list too. > > > > I've read something about the clocksource in the man page of jackd, but I > > don't understand what it means. clocksource cycle, hpet and system are > the > > options. What does this mean, and what would be recommended. Could this > flag > > in jackd improve performance? > > > > I already use xfce too by the way. > > > > grtz, > > Bart > > http://www.bartart3d.be/ > > > > -- > > Ubuntu-Studio-users mailing list > > [email protected] > > Modify settings or unsubscribe at: > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > > > > -- > Ubuntu-Studio-users mailing list > [email protected] > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users >
-- Ubuntu-Studio-users mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
