[Discuss-gnuradio] Xlib problem help request

[EDWARD HALL]

I completed a build with no obvious errors from tarballs, but I get an error 
when running applications that I hope someone can help with.  I am using a 
debian system that began with a Knoppix HD install.  The error messages are 
as follows:

address@hidden:/home/ward# cd 
/usr/share/doc/gnuradio-examples/examples/python/usrp
address@hidden:/usr/share/doc/gnuradio-examples/examples/python/usrp# 
./usrp_fft.py -d 8
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

Traceback (most recent call last):
 File "./usrp_fft.py", line 100, in ?
   main ()
 File "./usrp_fft.py", line 96, in main
   app = stdgui.stdapp (app_flow_graph, "USRP FFT")
 File "/usr/local/lib/python2.3/site-packages/gnuradio/wxgui/stdgui.py", 
line 35, in __init__
   wx.App.__init__ (self)
 File "/usr/lib/python2.3/site-packages/wx-2.5.3-gtk2-unicode/wx/_core.py", 
line 5311, in __init__
   self._BootstrapApp()
 File "/usr/lib/python2.3/site-packages/wx-2.5.3-gtk2-unicode/wx/_core.py", 
line 4990, in _BootstrapApp
   return _core_.PyApp__BootstrapApp(*args, **kwargs)
SystemError: wxEntryStart failed, unable to initialize wxWidgets!  (Is 
DISPLAY set properly?)


I am at a loss of where to look.  Any suggestions?

Thanks.