23 Mar
2005
23 Mar
'05
11:23 a.m.
On Tue, 2005-03-22 at 10:08 -0500, Spencer Russell wrote:
Wow, seems like you're having pretty much exactly
the same kinds
of troubles I've had, right down to the occasional keyboard
lockup. Maybe something strange with the via chipset?
Nope, keyboard lockups happen here too. And others have reported the
same, for me it's when I unplug my ua-25 so it's not card specific.
On Wed, Mar 23, 2005 at 02:32:22AM +0000, Steve
Fosdick wrote:
> Jackd will sometimes run for a few seconds without error but soon starts
> reporting errors of the form:
>
> delay of 24606.000 usecs exceeds estimated spare time of 23134.000; restart ...
> delay of 24779.000 usecs exceeds estimated spare time of 23134.000; restart ...
> delay of 24781.000 usecs exceeds estimated spare time of 23134.000; restart ...
> delay of 24741.000 usecs exceeds estimated spare time of 23134.000; restart ...
> jackd watchdog: timeout - killing jackd
>
See http://lalists.stanford.edu/lau/2005/03/0688.html which has gone
ignored on both this list and the jack devel list.
> I have tried kernels 2.6.10, 2.6.11, 2.6.11.4 and
2.6.11.5. The 2.6.11
> series seems to be closer to working.
I've tried from 2.6.8.1 up to 2.6.12.rcX, no love.
I also suspected IRQ issues, and digging through kernel-parameters.txt
brought me this boot option: acpi_irq_balance
Adding this to my grub.conf resulted in my usb bus no longer being
shared with my graphics adapter and about 5 other things.
Unfortunately this change in IRQ assignment seems to have zero effect.
I'm not sure what's to blame for the "delay of XXX.XXX usecs" messages,
however I know that more USB users than you are troubled by this. My
intuitively ordered list of suspects is:
1) kernel
2) alsa-drivers
3) jackd
and of course superseding all is my flaky hardware and software setup :)
however as I find more people with these issues I'm less likely to blame
myself. The ua-25 works flawlessly in OS X btw.
-good luck
--
Ryan Gallagher <ruinaudio(a)comcast.net>