[linux-audio-user] jack xruns on SUSE 9.3 with Edirol UA25 card - SOLVED

Cesare cesare at poeticstudios.com
Thu Jul 28 20:38:35 EDT 2005


Ryan wrote:

>On Thu, 2005-07-28 at 15:26 -0400, Lee Revell wrote:
>  
>
>>On Thu, 2005-07-28 at 02:59 -0500, Ryan wrote:
>>    
>>
>>>On Thu, 2005-07-28 at 08:07 +0200, Cesare Marilungo wrote:
>>>      
>>>
>>>>I solved the problem *cough* disabling the ethernet card. Don't know why
>>>>it worked randomly yesterday.
>>>>        
>>>>
>>>I can confirm this problem/solution.  UA25 glitchy as heck till eth0 is
>>>disabled.  I have a dell inspiron 5100 running gentoo btw.
>>>
>>>Makes icecast streaming jackd a bit tough, but at least it works.
>>>      
>>>
>>Are you both using the same network driver/hardware?  Does it share an
>>interrupt with the USB?
>>    
>>
>
>Ethernet controller: Broadcom Corporation BCM4401 100Base-T (rev 01)
>Interrupt: pin A routed to IRQ 7
>
>(b44 module, marked experimental since 2.4.x days)
>
>USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
>USB UHCI Controller
>Interrupt: pin [A, B, C, d] routed to IRQ 11
>
>This is an UHCI controller... I thought the usb kernel stuff was going
>to get some attention, something about top-half/bottom-half irq
>handling?  Afaik that hasn't happened yet.
>
>-ry
>
>
>
>  
>
Marvell Yukon Gigabit Ethernet 10/100/1000

I'm in Window$ now( developing in Flash, sigh!), can't check the irqs.  
But I remember that I checked for this and the irqs were different.

It's also interesting that I got half the latency switching from 
kernel-2.6.10 to 2.6.11. The latter is x86_64, BTW. And I can't get such 
low latency on MacOSX or XP (neither with the Egosys PCI card). And this 
is a USB card.

c.




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