Re: [LAU] xruns with m-audio fast track pro on fedora 8 ccrma -> kernel 2.6.22 , periods/buffer = 3 , disable system bips and esd, and proper rtirq setup

From: Matthias Schönborn <mbs1303@email-addr-hidden>
Date: Wed Jan 23 2008 - 16:23:56 EET

> > I'm running the Fast Track Pro with 64 Frames and 2 Periods (2,9msec),
> > and if I just use Ardour, I rarely get xruns. I'm running Kubuntu Gutsy,
> > so if I can provide any information on my configuration, go ahead and ask
> > :-)
> >
> > Matthias
>
> I tried ubuntu studio yesterday and i must admit that it worked better
> than the last fedora.
> Actually with fedora 6 on my older laptop and the same card i had almost
> no xruns with 2 periods and 64 frames.
>
>
> Which kernel are you using ? Did you tweak the irq priorities ?
>
> Flo

I didn't tweak the irq properties and I'm using the latest realtime-kernel
(linux-rt in the repositories), though the ati drivers still don't work with
it - I'd have never bought an ati if I had known that I would only be using
linux... Here's my output of cat /proc/interrupts:

           CPU0
  0: 956843 IO-APIC-edge timer
  1: 8431 IO-APIC-edge i8042
  8: 50 IO-APIC-edge rtc
  9: 7370 IO-APIC-fasteoi acpi
 12: 658 IO-APIC-edge i8042
 14: 136491 IO-APIC-edge libata
 15: 0 IO-APIC-edge libata
 16: 1 IO-APIC-fasteoi uhci_hcd:usb4, yenta, fglrx
 17: 84487 IO-APIC-fasteoi ohci1394, Intel ICH6
 18: 1 IO-APIC-fasteoi ipw2200
 19: 96932 IO-APIC-fasteoi uhci_hcd:usb1, ehci_hcd:usb5
 20: 64 IO-APIC-fasteoi uhci_hcd:usb2
 21: 0 IO-APIC-fasteoi uhci_hcd:usb3, sdhci:slot0
 22: 83932 IO-APIC-fasteoi eth0
NMI: 0
LOC: 323689
ERR: 0
MIS: 0

I don't know what it means, but maybe there's some information for you in
there ;-) . If it's of any effect, I'm running a generic kernel right now and
the card's not connected, but the system is the same. There's
no /etc/init.d/rtirq on my system, so I can't provide that information...
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Received on Wed Jan 23 20:15:02 2008

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