21 Dec
2007
21 Dec
'07
12:01 p.m.
-----Oorspronkelijk bericht-----
Van: Karsten Wiese
Verzonden: woensdag 19 december 2007 16:55
Aan: linux-audio-user(a)lists.linuxaudio.org
CC: Raphael Bollen
Onderwerp: Re: [LAU] Xruns and Thinkpad T60
Am Montag, 17. Dezember 2007 schrieb Raphael Bollen:
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.
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