On Sun, 11 Sep 2011, Graeme Gill wrote: > One of the users of my software is getting the following error > message on Debian GNU Linux Squeeze: > > > Product: Datacolor Spyder3 > > usb 3-2: Manufacturer: ColorVision Inc. > > usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd mtp-probe rqt 128 rq 6 len 1024 > > ret -84 > > usb 3-2: USB disconnect, device number 38 > > usb 3-2: new full speed USB device number 39 using uhci_hcd > > usb 3-2: New USB device found, idVendor=085c, idProduct=0300 > > usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > > (I've had this sort of device working OK on various version of Red Hat) > > Can anyone comment on the likely reason for this ? The error message indicates that the device got disconnected from the USB bus and then reconnected, possibly after doing sort of internal reset. Hard to say why; it could be caused by a number of things. The most likely is that it didn't like a message it received shortly before this happened. A usbmon trace might help. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
