[linux-audio-dev] System Exclusive question

Clemens Ladisch clemens at ladisch.de
Tue Jun 10 11:01:59 UTC 2003

chris.wareham at btopenworld.com wrote:
> Clemens Ladisch <clemens at ladisch.de> wrote:
> > My unit's light is active while the dump is being transmitted (several
> > seconds, depending on the size of the data). Are you sure your's is
> > sending anything?
> The MIDI activity light flashes *very* briefly, so it could be that
> nothing's being sent back.

My knowledge is limited to GS sysexs only, but I think your address
04 01 76 / length 00 01 76 may not be correct. The lower two bytes are
identical. Does the parameter at address 04 01 76 really have a length
of F6h bytes?

> > chris.wareham at btopenworld.com wrote:
> > > I have tried using Linux, but gave up when I couldn't get ALSA or
> > > OSS to recognise my USB MIDI interface, (a Yamaha UX96). Under
> > > NetBSD it's recognised as soon as I plug it in.
> >
> > Any somewhat recent version of ALSA does support the UX96.
> I tried RedHat 9.0 and the CCRMA stuff, but I guess I mustn't have setup
> the modules.conf file properly.

The snd-usb-audio driver doesn't really need any entries in
modules.conf, except when you want to force it to have a specific card

The module should be automatically loaded by the hotplug scripts when
you plug in the USB device (or when booting).

> I assume I need an entry in there to load the USB MIDI interface
> driver - could you send me your modules.conf so I can see what
> sort of entries are required?

Something like the following: (I'm assuming you have another sound
card as the first card)

	# ALSA stuff
	alias char-major-116 snd
	options snd cards_limit=2

	alias snd-card-0 snd-whatever
	options snd-whatever index=0 some_option=42

	alias snd-card-1 snd-usb-audio
	options snd-usb-audio index=1

	# OSS emulation stuff
	alias char-major-14 soundcore
	alias sound-service-0-1 snd-seq-oss
	alias sound-service-0-8 snd-seq-oss

	alias sound-slot-0 snd-card-0
	alias sound-service-0-0 snd-mixer-oss
	alias sound-service-0-3 snd-pcm-oss
	alias sound-service-0-12 snd-pcm-oss

	alias sound-slot-1 snd-card-1
	alias sound-service-1-0 snd-mixer-oss
	alias sound-service-1-3 snd-pcm-oss
	alias sound-service-1-12 snd-pcm-oss


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