[LAU] How to find USB sound card IRQ?

[Arda Eden]

Look at this,

20:    3849997    3850202   IO-APIC-fasteoi   uhci_hcd:usb3
and,
Bus 003 Device 008: ID 0a92:0091 EGO SYStems, Inc

it looks like its IRQ20.

maybe.

On Tue, Mar 4, 2008 at 8:15 PM, Thomas Skellund <thomas at secretfreund.dk>
wrote:

> 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
> >
> >
> >
> >         _______________________________________________
> >         Linux-audio-user mailing list
> >         Linux-audio-user at lists.linuxaudio.org
> >         http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
> >
> >
> >
> > --
> > Arda EDEN
> > Cumhuriyet University
> > Faculty of Fine Arts
> > Department of Music Technology
>
>


-- 
Arda EDEN
Cumhuriyet University
Faculty of Fine Arts
Department of Music Technology
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.linuxaudio.org/pipermail/linux-audio-user/attachments/20080304/54b3ddbe/attachment.htm