[LAU] How to find USB sound card IRQ?

[Thomas Skellund]

It says this:

Bus 005 Device 006: ID 04d9:0499 Holtek Semiconductor, Inc. 
Bus 005 Device 001: ID 0000:0000  
Bus 003 Device 008: ID 0a92:0091 EGO SYStems, Inc. 
Bus 003 Device 001: ID 0000:0000  
Bus 007 Device 001: ID 0000:0000  
Bus 002 Device 002: ID 08ff:1600 AuthenTec, Inc. 
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 002: ID 05c8:010b Cheng Uei Precision Industry Co., Ltd
(Foxlink) 
Bus 001 Device 001: ID 0000:0000  
Bus 006 Device 001: ID 0000:0000  
Bus 004 Device 003: ID 0bda:0158 Realtek Semiconductor Corp. 
Bus 004 Device 001: ID 0000:0000  


The "Ego Systems" line goes away when I unplug my Esi Maya 44 card.

I'm not sure what all this means. 
How can i conclude the irq?

On Tue, 2008-03-04 at 20:09 +0200, Arda Eden wrote:
> try ,
> 
> lsusb (as root)
> 
> On Tue, Mar 4, 2008 at 7:31 PM, Thomas Skellund
> <thomas at secretfreund.dk> wrote:
>         Hi all
>         
>         My laptop has 4 usb holes in it, and i have a USB sound card
>         in one of
>         them.
>         Everything works fine, but i have some xruns
>         
>         I'm tying to prio both jackd and the right IRQ process for my
>         sound
>         card.
>         
>         How can i find out which IRQ my USB sound card use?
>         (its not shown belowe...it's maya44 usb)
>         
>         $ cat /proc/interrupts
>                   CPU0       CPU1
>          0:        664         43   IO-APIC-edge      timer
>          1:        829        830   IO-APIC-edge      i8042
>          8:          3          4   IO-APIC-edge      rtc
>          9:      20503      20220   IO-APIC-fasteoi   acpi
>          12:       9059       8991   IO-APIC-edge      i8042
>          14:      92878      94797   IO-APIC-edge      libata
>          15:          0          0   IO-APIC-edge      libata
>          17:         25         21   IO-APIC-fasteoi   ehci_hcd:usb1,
>         uhci_hcd:usb7, sata_sil24
>          18:     304856     304697   IO-APIC-fasteoi   uhci_hcd:usb6,
>         ahci,
>         iwl3945
>          19:         12         13   IO-APIC-fasteoi   uhci_hcd:usb2,
>         i915 at pci:0000:00:02.0
>          20:    3849997    3850202   IO-APIC-fasteoi   uhci_hcd:usb3
>          21:     199028     199069   IO-APIC-fasteoi   ehci_hcd:usb4,
>         uhci_hcd:usb5
>          22:       3411       3391   IO-APIC-fasteoi   HDA Intel
>         NMI:          0          0
>         LOC:   24165408   23635862
>         ERR:          0
>         MIS:          0
>         
>         
>         
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> 
> 
> 
> -- 
> Arda EDEN
> Cumhuriyet University
> Faculty of Fine Arts
> Department of Music Technology