Sorry Gabriel,

USB interface is any one of the M-Audio Line. FastTrack USB, FastTrack Pro, MobilePre USB... In other words multiple interfaces have been tested. This problem is specific to this machine...

dmsg, lsusb, lsusb -t

[ 46.458327] ALSA urb.c:480: frame 0 active: -75

[ 46.461327] ALSA urb.c:480: frame 0 active: -75

[ 46.463328] ALSA urb.c:480: frame 0 active: -75

[ 46.466328] ALSA urb.c:480: frame 0 active: -75

[ 46.468329] ALSA urb.c:480: frame 0 active: -75

[ 46.472326] ALSA urb.c:480: frame 0 active: -75

[ 46.475327] ALSA urb.c:480: frame 0 active: -75

[ 46.479328] ALSA urb.c:480: frame 0 active: -75

[ 46.482328] ALSA urb.c:480: frame 0 active: -75

[ 46.487329] ALSA urb.c:480: frame 0 active: -75

[ 46.489329] ALSA urb.c:480: frame 0 active: -75

[ 46.494290] ALSA urb.c:480: frame 0 active: -75

[ 46.498322] ALSA urb.c:480: frame 0 active: -75

[ 46.501287] ALSA urb.c:480: frame 0 active: -75

[ 46.508331] ALSA urb.c:480: frame 0 active: -75

[ 46.560332] ALSA urb.c:480: frame 0 active: -75

[ 98.971734] ALSA urb.c:146: timeout: still 7 active urbs..

[ 104.970917] ALSA urb.c:146: timeout: still 2 active urbs..

[ 121.260876] ALSA pcm.c:223: 4:2:1: usb_set_interface failed

Bus 004 Device 002: ID 046d:c31c Logitech, Inc.

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 004: ID 0763:200f Midiman M-Audio MobilePre

Bus 003 Device 003: ID 15ca:00c3 Textech International Ltd. Mini Optical Mouse

Bus 003 Device 002: ID 0408:3001 Quanta Computer, Inc. Optical Touch Screen

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/6p, 12M

|__ Port 3: Dev 2, If 0, Class=HID, Driver=usbhid, 1.5M

|__ Port 3: Dev 2, If 1, Class=HID, Driver=usbhid, 1.5M

/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/6p, 12M

|__ Port 3: Dev 3, If 0, Class=HID, Driver=usbhid, 1.5M

|__ Port 4: Dev 4, If 0, Class=audio, Driver=snd-usb-audio, 12M

|__ Port 4: Dev 4, If 1, Class=audio, Driver=snd-usb-audio, 12M

|__ Port 4: Dev 4, If 2, Class=audio, Driver=snd-usb-audio, 12M

/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M

/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M

...Rods ;-)

On Wed, Feb 2, 2011 at 09:58, Gabriel Beddingfield <gabrbedd@gmail.com> wrote:

And the usb interface is.... ??

Does `dmesg` have any error messages?

The output of `sudo lsusb` and `sudo lsusb -t` may also be helpful.
(E.g. is the audio interface sharing a hub with something else?)

-gabriel