Re: [Discuss-gnuradio] Software troubes - gr_vmcircbuf ...?

[wallen]

On Fri, 2009-05-08 at 18:32 -0700, Eric Blossom wrote:
> On Fri, May 08, 2009 at 02:04:59PM -0600, wallen wrote:
> > I've been trying to get Gnuradio running with my USRP2, and am still
> > having some troubles.  My computer is an older Dell Inspiron 5100 laptop
> > running Debian (Lenny).  I've installed a D-Link DGE-660TD Gigabit
> > Cardbus adapter, and have compiled what I believe is the most recent
> > release of the code per the instructions in the README file.
> > 
> > I can find the USRP2 by running the find_usrps command, but oddly enough
> > this occasionally segfaults.  So far what looks like the most intriguing
> > error message I got when trying to run usrp2_fft.py.  This looks like:  
> > 
> >    usrp2_fft.py
> >    usrp2: failed to enable realtime scheduling
> 
> Edit /etc/security/limits.conf and add this line:
> 
> @usrp  - rtprio 50
> 
> then logout and back in.

Well ... that doesn't seem to change anything.  I still get the same
error if I try running as a regular user.  Running as root gives me
different errors.  Running this as root after trying as a regular user I
got:

    ./usrp2_fft.py
   Traceback (most recent call last):
     File "./usrp2_fft.py", line 273, in <module>
       main ()
     File "./usrp2_fft.py", line 269, in main
       app = stdgui2.stdapp(app_top_block, "USRP2 FFT", nstatus=1)
     File 
   "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py",
line 
   36, in __init__
       wx.App.__init__ (self, redirect=False)
     File 
   "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 
   7836, in __init__
       self._BootstrapApp()
     File 
   "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 
   7433, in _BootstrapApp
       return _core_.PyApp__BootstrapApp(*args, **kwargs)
     File 
   "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py",
line 
   39, in OnInit
       frame = stdframe (self.top_block_maker, self.title,
self._nstatus)
     File 
   "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py",
line 
   60, in __init__
       self.panel = stdpanel (self, self, top_block_maker)
     File 
   "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py",
line 
   81, in __init__
       self.top_block = top_block_maker (frame, self, vbox, sys.argv)
     File "./usrp2_fft.py", line 70, in __init__
       self.u = usrp2.source_32fc(options.interface, options.mac_addr)
     File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp2.py",
line 
   621, in source_32fc
       return _usrp2.source_32fc(*args, **kwargs)
   RuntimeError: Unable to retrieve daughterboard info

Trying to run again as root I get:

    ./usrp2_fft.py
   usrp2: channel 0 not receiving
   usrp2::rx_samples() failed

Not quite sure where to look to resolve what is going on here.

- Wayde