Re: Programatic disconnect and reconnect of USB device

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 14 Nov 2012, Graham wrote:

> Hello Alan,
> 
> I have a similar issue and not sure if bind/unbind is the solution. I have
> multiple devices plugged into a hub (gprs modem, webcam,rfid reader) which
> connects to an SBC running linux 2.6.32.11. Each two of the devices work
> together and function correctly. However when all three are connected the camera
> fails to cature an image. Now the issue would appear to be one of bandwidth
> according to USB experts in that I'm getting a uvcvideo:failed to submit URB
> 0(-28). Whats been suggested is that if one of the usb devices is removed then
> to bandwidth issue should be resolved.I tried unbind on the rfid reader and all
> seemed well in terms of the other two devices functioning but I cannot get the
> rfid reader to bind. Rather I get can't set config #1 error -62.
> 
> Can you shed any light on this please?

Error -62 is -ETIME, which means a request timed out.  You can find out 
which request by collecting a usbmon trace (see 
Documentation/usb/usbmon.txt).

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


[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux