Re: [Discuss-gnuradio] GnuRadio 3.1.1 and USRP on Fedora 8

[Eric Blossom]

On Tue, Feb 12, 2008 at 12:25:04PM -0800, Johnathan Corgan wrote:
> On 2/12/08, Ed Criscuolo <address@hidden> wrote:
> 
> > Has anyone else seen this?
> 
> Can you confirm that you are in fact using a USB 2.0 controller?  Your
> symptoms are consistent with what happens when you have USB 1.1.  The
> enumeration is able to successfully occur, so you get the device,
> etc., but when the host tries to establish a high speed endpoint for
> data transfer, it fails.

You can check this with:

  $ lsmod | grep ehci
  ehci_hcd               39117  0

ehci_hcd us the name of the USB 2.0 host driver

ohci_hcd and uhci_hcd are the USB 1.1 host drivers.