[LAU] Multiple ICE1712 cards setup with jack2

[Joe Hartley]

On Wed, 01 Feb 2012 21:48:16 +0100
mn0 <mn0 at fukked-up.de> wrote:

> > Hope this helps, or at least gives you a starting point for troubleshooting.
> Oh yes, I found the shared IRQs and I know for certain, it's possible to
> use jack 1.9.7 with .asoundrc and two ICE1712.

While I agree that the Jack: JackGraphManager::AssertPort error would seem
to be some sort of pointer issue, odd things happen when the hardware 
configuration is less-than-stable.  Sharing an IRQ with both a SATA and
a USB controller sets up a situation where I can odd things happening.

Changing slots is one wat of getting a different IRQ; your motherboard 
may also have a way of setting or reserving IRQs in its BIOS.  I recall
having to try a few different slots before the cards got unique IRQs.

I did some searching, and found that you're not the only one with a
similar issue.  This user had different hardware but very similar 
errors:  http://ubuntuforums.org/showthread.php?t=1580566 

One last thing to check, based on my searches - the AssertPort error
has been associated with some plugins.  You haven't mentioned a client
program, so I'm not sure if jack dies before you can start one, or if
there's a correlation here.  If the errors actually happen after you 
start something like Ardour, I'd see what happens if you disable the 
plugins.  There are some that will absolutely hammer my system every
time I try to use them.  They might be from the C* set, but I really
can't remember off the top of my head.

-- 
======================================================================
       Joe Hartley - UNIX/network Consultant - jh at brainiac.com
 Without deviation from the norm, "progress" is not possible. - FZappa