On Thu, 15 Sep 2005, Leslie Katz wrote:

> Hello again, Alan.
> 
> I believe I've obtained the information you wanted me to obtain.
> 
> I unplugged, not only the DSC, but also a webcam and a flashdrive, so
> that I had no devices plugged into any USB port on the computer.
> 
> I rebooted.
> 
> I plugged in the DSC. That added the following line at the end of the
> dmesg output: "usb 3-2: new full speed USB device using uhci_hcd and
> address 2".
> 
> I then ran, as root, "/sbin/lsusb -v".

You didn't set usbfs_snoop to 1 first?

> That added the following lines to the dmesg output:
> 
> "usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 4
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 256
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 2
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 9
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 9
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 9
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 9
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 9
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 9
> ret -71
> usb 3-2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 4
> ret -71"

This indicates two things.  First, the usbfs_snoop facility wasn't working 
when you ran lsusb.  Maybe because you didn't turn it on, maybe for some 
other reason.  Second, the camera itself wasn't working, because those 
error messages indicate it did not respond to the messages sent by lsusb.

One thing I can suggest: Try installing the 2.6.13 kernel.  You never 
know, it might help.

Alan Stern



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