On Thu, 9 Aug 2007, David Griffith wrote:
> I recently acquired a confirmed-good USB midi interface. A MOTU Fastlane.
> I've tried everything I can think of to get it to work. The interface
> shows itself like this:
>
> laptop:~$ amidi -l
> Dir Device Name
> IO hw:1,0,0 Fastlane MIDI A
> IO hw:1,0,1 Fastlane MIDI B
>
> but not like this:
>
> laptop:~$ amidi -da -p hw:1,0,0
> [I press keys on MIDI keyboard and fiddle the bend wheel. Nothing
> happens. Though, the IN light blinks as it should.]
>
> I've tracked the problem down to two potentials.
>
> 1) Through google, I've seen lots of references to a "usb_midi" module.
> On Ubuntu 7.04 (feisty) running the standard kernel (2.6.20-16), this
> doesn't seem to exist. "modprobe usb_midi" returns "FATAL: Module
> usb_midi not found.".
>
> 2) In the list of changes for kernel 2.6.20, I noticed a line saying that
> usb_midi was removed and now there's something called "g_midi" to take its
> place. When I try that module, I get this:
>
> FATAL: Error inserting g_midi
> (/lib/modules/2.6.20-16-lowlatency/kernel/drivers/usb/gadget/g_midi.ko):
> Invalid argument
>
>
> So, how can I get this USB MIDI interface working under Ubuntu?
I don't know much about USB MIDI programming or the old usb_midi
driver. However I _can_ tell you that g_midi is not a replacement for
it:
usb_midi was meant to be used when you have a USB MIDI
device attached to your computer;
g_midi is meant to be used when you want your computer to
act as a USB MIDI device attached to some other computer.
Alan Stern
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