[LAU] Multiple ICE1712 cards setup with jack2

[Stéphane Letz]

> 
> Message: 23
> Date: Wed, 1 Feb 2012 16:31:28 -0500
> From: Joe Hartley <jh at brainiac.com>
> Subject: Re: [LAU] Multiple ICE1712 cards setup with jack2
> To: linux-audio-user at lists.linuxaudio.org
> Message-ID: <20120201163128.7f5ca69bcd62e4fb3dae49ce at brainiac.com>
> Content-Type: text/plain; charset=US-ASCII
> 
> 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,

For this specific issue, please test with latest SVN (1.9.9)

> 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.
> 

Stéphane