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RE: [Discuss-gnuradio] Fedora 6 and USB

From: Cicale Randy S 2dLt AFRL/VSBXI
Subject: RE: [Discuss-gnuradio] Fedora 6 and USB
Date: Tue, 9 Jan 2007 08:37:29 -0500

Thanks for the help (Eric, Matt, and Josh). I should have mentioned I was 
already running as root. I typed in /sbin/lsmod | grep ehci and did see 
ehci_hcd. So I also tried the UdevConfig, still with no luck. My coworker had a 
2.0 USB PCMCIA card for his laptop and we just so happened to have a PCI to 
PCMCIA controller card lying around. The only downside is that I don't think 
it's running at full speed- 16MB/sec and 32MB/sec failed on the 
benchmark_usb.py program and when running the oscilloscope I notice clipping.

I guess I have to find a better PCI card that will support 32MB/sec before I 
can really get this baby cooking.

Thanks again!

-----Original Message-----
From: Eric Blossom [mailto:address@hidden 
Sent: Monday, January 08, 2007 2:13 PM
To: Cicale Randy S 2dLt AFRL/VSBXI
Cc: 'address@hidden'
Subject: Re: [Discuss-gnuradio] Fedora 6 and USB

On Mon, Jan 08, 2007 at 01:41:17PM -0500, Cicale Randy S 2dLt AFRL/VSBXI wrote:
> After installing the gnuradio on Fedora 6, I wanted to run test_counting.py 
> (or any program in the gnuradio-examples/python/usrp directory) but I get the 
> following error:
> Usrp_open_interface:usb_claim_interface: failed interface 2
> Could not claim interface 2: No such file or directory

This also happens if you're machine does not support USB 2.0

If you try:

  $ /sbin/lsmod | grep ehci
  ehci_hcd               31880  0
  usbcore               115716  4 usbhid,ehci_hcd,uhci_hcd

Do you see an entry for ehci_hdc?  If not, your machine probably
doesn't support USB 2.0.  The USRP requires USB 2.0


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