[linux-audio-user] Re: M-Audio MidiSport 2x2

[Markus Herhoffer]

Thanks for the help! That looks very good.

> #! /bin/bash
> modprobe snd-usb-audio
> cd /usr/share/usb/midisport
> fxload -D /proc/bus/usb/004/003 MidiSportLoader.ihx -I \
> MidiSport2x2.ihx
> exit

Where do I get the files located in /usr/share/usb/midisport? There's
nothing like that on my system.

> I'm interested by your comment "hotplug makes some real
> trouble with USB audio devices".  I'm having trouble
> getting the audio side of my Novation Speedio (a USB audio
> and MIDI interface) to work properly (as per previous posts
> on this list) - could this be related?  If so, what do I do
> to run it without hotplug?

I don't know the Novation device, but I had some problems with the Maya
44 USB and some Tascam USxxx (both USB) together with hotplug. The
solution to both problems was to add the corresponding kernel modules to
the blacklist of hotplug. On Gentoo with the standard layout you find
the blacklist in /etc/hotplug/blacklist. On default there should be some
entries in it like 'usbcore' and 'usb-uhci'.

Markus Herhoffer

Peter Clarke wrote:
> Markus Herhoffer <markus at herhoffer.net> wrote:
> 
> 
>>I've been using the M-Audio Midisport 2x2 together with
>>the Maya 44 USB for a long time and it worked quite well.
>>But after an update of ALSA only the Maya 44 works. The
>>module 'snd-usb-audio' is loaded properly and the device
>>is recognized by the system. I've also put
>>'snd-usb-audio' on the blacklist of hotplug, because
>>hotplug makes some real trouble with USB audio devices.
> 
> 
> I had exactly the same problem when updating Gentoo 
> recently.  Hans Fugal kindly tried to help me on this list 
> on 6 Dec 2005, and sent me this informative link:
> 
> http://sourceforge.net/tracker/index.php?func=detail&aid=1353514&group_id=87777&atid=584353
> 
> However, that didn't fix it for me.  Now, I have an ugly 
> workaround in place:  a little script that gets run 
> by /etc/conf.d/local.start, which contains the following:
> 
> #! /bin/bash
> modprobe snd-usb-audio
> cd /usr/share/usb/midisport
> fxload -D /proc/bus/usb/004/003 MidiSportLoader.ihx -I \ 
> MidiSport2x2.ihx
> exit
> 
> This works, provided that the MidiSport is always at the 
> same USB bus address;  in your case, you will have to 
> change the /004/003 to /002/003.
> 
> Hope that helps.
> 
> I'm interested by your comment "hotplug makes some real 
> trouble with USB audio devices".  I'm having trouble 
> getting the audio side of my Novation Speedio (a USB audio 
> and MIDI interface) to work properly (as per previous posts 
> on this list) - could this be related?  If so, what do I do 
> to run it without hotplug?
> 
> Just one more comment while I'm mailing the list:  if anyone 
> uses the Proteus 2000 (a hardware synth), you might be 
> interested in having a copy of a spreadsheet I've prepared, 
> which has descriptions of all the drums and percussion 
> sounds in the ROM it ships with.  Let me know.
> 
> Peter C