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
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