Re: [Discuss-gnuradio] Big bugs out of nowhere...

[George Nychis]

Have you changed anything on the USB bus?  For example, adding another 
device that is USB intensive or adding a hub?  I received this error 
once and narrowed it down to my webcam on the same bus sucking up 
bandwidth, causing the USRP to have a hard time initializing.  Once I 
disconnected the webcam, it went away.

- George


Eric Blossom wrote:
> On Mon, Mar 17, 2008 at 05:50:03AM -0400, Jared Jensen wrote:
>
> > Yes.  I double checked just to make sure.  I have a usrp group.  I'm
> > in it.  My 10-usrp.rules file is verbatim from the site.  In the
> > past, I had no trouble accessing the usrp as non-root... but I
> > triple-checked, and the group is setup correctly.
>
> Let me ask the question a different way.
>
> If you run as root, does it work?
>
> Eric
>
>
> > I restarted, and I still get the same behavior.  
> >
> > j0j
> >
> > > Date: Fri, 14 Mar 2008 10:54:42 -0700
> > > From: address@hidden
> > > To: address@hidden
> > > CC: address@hidden
> > > Subject: Re: [Discuss-gnuradio] Big bugs out of nowhere...
> > >
> > > On Fri, Mar 14, 2008 at 10:48:29AM -0400, Jared Jensen wrote:
> > > > I haven't been using my usrp for a little while.  I've been porting
> > > > my code to a TI C64x+.  I came back to my usrp today and tried to
> > > > run just a basic receive for test data for my TI DSP.  I got the
> > > > following error.  In usbview I see a "USRP Rev4" under my ehci
> > > > controller.  I thought it might be the board, so I grabbed my other
> > > > usrp, and the exact same thing happened.  (This is with
> > > > gnuradio-3.1.1 ) So I tried my older gnuradio install, and tried to
> > > > run usrp_fft.py... and the same things happened.  I checked
> > > > /usr/local/share/usrp.  It has all of the rbf (see below).  Has
> > > > anyone encountered this before?  It was just a few months back
> > > > everything was great... I didn't touch gr for a while... came back
> > > > and BOOM.  :( No joy.
> > >
> > > Have you followed the instructions for ensuring that you can access
> > > the USRP w/o being root?
> > >
> > >   http://gnuradio.org/trac/wiki/UdevConfig
> > >
> > > Eric
> > >
> > >
> > > > usb_control_msg failed: error sending control message: Protocol error
> > > > usb_control_msg failed: error sending control message: Protocol error
> > > > usb_control_msg failed: error sending control message: Protocol error
> > > > usrp: failed to load fpga bitstream 
> > > > /usr/local/share/usrp/rev4/std_2rxhb_2tx.rbf.
> > > >
> > > >   File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp1.py", line 1232, 
> > > > in source_c
> > > >     return _usrp1.source_c(*args)
> > > > RuntimeError: can't open usrp1
>
>
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