On 12/02/11 03:51, Paul Davis wrote:
On Fri, Feb 11, 2011 at 10:52 AM, Luke Peterson<luke.peterson@xxxxxxxxx> 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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