Re: Fw: USB ehci problems with USRP, -71 EPROTO

Which kernel versions?
Which version of libusb, if that is used?

> I am having troubles connecting and interfacing to a device called a 
> USRP via USB which is used with GNU Radio.  At one time, the setup 
> worked perfectly fine with no errors.  Then i tried to give a regular 
> user permission to the USB device and everything went downhill.

If you don't do that, does it really work?

> Now, whenever I plugin the device sometimes I sometimes get the error:
> usb 1-7: device descriptor read/all, error -71

-EPROTO
 
> I was able to plug the USRP into another machine with GNU Radio and 
> successfully flash new firmware to it 100% successfully several times. 
> I cannot get a single firmware on using my machine and the USRP.
> 
> Heres what else I've tried:
>    - un-installing and re-installing GNU Radio
>    - switching USB ports on the machine
>    - switching USB cables
>    - rebuilding the kernel
>    - installing a newer version of udev
>    - using a different USRP on my machine (doesn't work)

How are these machines different?

Also lsusb for your device and full dmesg please.

	Regards
		Oliver

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel