On Sun, May 15, 2011 at 4:16 AM, Daniel Mack zonque@gmail.com wrote:
On Sat, May 14, 2011 at 7:24 PM, Daniel Mack zonque@gmail.com wrote:
2011/5/14 Grant Diffey gdiffey@gmail.com:
HI everyone
Is this possibly related to the usb midi regression felix and members of this list were discussing a while ago with the fast track ultra which is another usb composite device?
Possibly, yes. A dump generated by "lsusb -v" with this device attached would help.
And just guessing, but does reverting 7b6717e ("ALSA: usb-audio: Assume first control interface is for audio") help such devices?
Daniel
So I reverted 7b6717e and... Nope. still no midi ports.
Kernel messages are:
[ 131.484053] usb 3-1: new high speed USB device using ehci_hcd and address 3 [ 131.617753] usb 3-1: config 1 interface 3 altsetting 0 bulk endpoint 0x7 has invalid maxpacket 8 [ 131.617760] usb 3-1: config 1 interface 3 altsetting 0 bulk endpoint 0x87 has invalid maxpacket 8 [ 131.618750] usb 3-1: New USB device found, idVendor=0763, idProduct=2080 [ 131.618754] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 131.618756] usb 3-1: Product: Fast Track Ultra [ 131.618758] usb 3-1: Manufacturer: M-Audio [ 132.767312] usbcore: registered new interface driver snd-usb-audio
And amidi -l reports
nevyn@cetacea:~/linux$ amidi -l Dir Device Name
the hack mentioned earlier of setting the quirk STANDARD_MIDI_INTERFACE that clemens suggested does work but I'm not sure it's the "right" answer to the problem.
Grant