linuxaudio.org

On 12/02/11 03:51, Paul Davis wrote:

quoted text
> On Fri, Feb 11, 2011 at 10:52 AM, Luke Peterson  wrote:

>

>> I'm familiar with the importance of connection order already with my rig: I

>> learned to plug my Fast Track Pro in to USB before any other USB midi device

>> or else I have to change around my JACK config to point to a device other

>> than hw:1.

>

> cat /proc/asound/cards

>   0 [SB             ]: HDA-Intel - HDA ATI SB

>                        HDA ATI SB at 0xfcef8000 irq 16

>   1 [DSP            ]: H-DSP - Hammerfall DSP

>                        RME Hammerfall DSP + Digiface at 0xfcff0000, irq 20

>   2 [NVidia         ]: HDA-Intel - HDA NVidia

>                        HDA NVidia at 0xfe57c000 irq 32

>

> see the names in square brackets? use them to tell JACK what to use:

>

>     jackd -d alsa -d hw:DSP .....

>

> then the discovery order doesn't matter anymore.

Man, I never knew that either! I've side-stepped the problem now by

switching to a Firewire interface for JACK, but before that, I'd tackled

it by explicitly numbering the cards at module load time through a file

in /etc/modprobe.d.
That solution actually worked well, and it was easy when I just had one

USB device (and a couple of PCI ones). I have four USB devices now, and

while it still works, the module options look a little ridiculous:
options snd-usb-audio index=3,4,5,6 vid=0x12e6,0x15ca,0x0471,0x0944

    pid=0x0013,0x0101,0x0329,0x010f
Thanks

Leigh

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