Re: Jack shots down or creates xruns

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Hi,

On Friday 25 June 2010 15:55:06 Thomas Hedegaard wrote:
> I have a problem with jack. I have a Edirol fa-101 firewire soundcard on
> amd processer (2500+) with 512Mb RAM. If i have low frames/period setting
> ( 128) jack shots down after short time (2 - 20 sec or almost instantly if
> I run a program; ardour or openoffice) or if I have a high frames/period
> setting (1024) I get xruns.
> I have tried almost every setting possible and tried changing nice values
> on the firewire card and a lot of other stuff.

Changing nice-values will not help because:

>  10:     445734    XT-PIC-XT        ohci1394, yenta,
> radeon@pci:0000:01:05.0

...your firewire-controller shares its interrupt with the graphics card. That 
will almost always make problems.
And using a pccard won't help you, as your pccard-slot shares that same 
interrupt as well. Bummer.

It might be that your BIOS allows selecting interrupts for devices. Other then 
that I fear you are completely out-of-luck with that laptop for firewire-audio.

> My Firewire card:*
> thomas@thomas-laptop:~$ lspci | grep Fire
> 00:0a.1 FireWire (IEEE 1394): Texas Instruments PCI4410 FireWire Controller
> (rev 02)

I think that one should work (if it wasn't sharing the interrupt).

A side-note: There is a reason the ffado-README contains instructions what to 
report in case of errors. Mostly a verbose log of jack. And the output of 
ffado-diag...

Have fun,

Arnold

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