Re: [LAU] sound card order (was: Problem uploading sysex data to hardware synth)

From: Clemens Ladisch <clemens@email-addr-hidden>
Date: Sun May 05 2013 - 13:42:07 EEST

Brent Busby wrote:
> I also have an Edirol UM-3EX USB 3-port Midi interface that's being
> forced to be last with index=-2, since it's not really even a sound
> device and I want it to be last (though how "-2" is achieving this is
> one of the things I'm murky about, and hesitant to screw with).

As a 32-bit two's-complement negative integer, -2 in binary is
11111111111111111111111111111110. This means that the snd-usb-audio
driver is allowed to attach to any index except 0. (If the USB driver
is loaded before the HDSP driver, you lose.)

> If I enable the snd-virmidi driver, I'd like it to be even lower in
> priority than the Edirol UM-3EX Midi, and be last.

Do not use the index= option. Always use the slots= options of the snd
module instead.

> options snd-... index=...
> ...
> # options snd slots=snd-hda-intel,snd-hdsp,snd-usb-audio

Remove the index= lines, uncomment the last line, and add the
snd-virmidi driver where desired.

Regards,
Clemens
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Received on Sun May 5 16:15:01 2013

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