Re: [LAU] Xruns and Thinkpad T60

> -----Oorspronkelijk bericht-----
> Van: Karsten Wiese
> Verzonden: woensdag 19 december 2007 16:55
> Aan: linux-audio-user@email-addr-hidden
> CC: Raphael Bollen
> Onderwerp: Re: [LAU] Xruns and Thinkpad T60
>
>
> Am Montag, 17. Dezember 2007 schrieb Raphael Bollen:
> > Hi Everyone,
> >
> > I'm struggling to transform a Thinkpad T60 into a decent
> audio system. I've installed ubuntu studio Feisty and a
> realtime kernel from texware.it. When I run jack in realtime
> mode using for
> example 512 frames/period, it shows in its messages a lot
> (>10/sec) late driver wakeup warnings and does a lot of xruns
> (>1/sec). I've changed the IRQ priority of the sound card (an
> HDA intel) to
> realtime but this does not change the warnings/xruns. It's
> not the first time I setup a computer for audio and so far
> succeded using 64 frames/period. Here I tried every settings I could
> (periods/buffer, samplerate, even tried with a Maudio Fast
> track pro) but still no joy.
> >
> > This Thinkpad has an ATI graphic card (not on the same IRQ
> as the sound card) and uses fglrx driver. Could this be the
> culprit? Is there another (free) driver I could use? Does
> anyone have an
> idea of what to try next?
>
> Maybe this helps:
> Using a 2.6.24-rc5 kernel with jackd @builtin hda intel soundcard:
>
> $ jackd -t100 -RP 80 -d alsa -d hw:0 -p128 -n3
>
> The -t100 and the -n3 took me some time to find out.
> With em the only thing noticed so far to stall jackd was $ lsusb.
>
> Karsten
>

Thank you for this information and sorry I couldn't reply sooner. I have now found that the soundcard is sharing its interrupt with ipw3945 (wifi driver) and it's probably the reason for the xruns. I'll try to deactivate the driver when I get access to this computer again (it's not mine and remote debugging is not always easy...)

Best regards and Merry Christmas everyone

-- 
Raphaël.
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