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Re: [Discuss-gnuradio] get fatal IO error 11 when running usrp2_fft.py (

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] get fatal IO error 11 when running usrp2_fft.py (USRP2 + XCVR2450)
Date: Mon, 15 Nov 2010 21:31:38 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20101103 Fedora/1.0-0.33.b2pre.fc14 Thunderbird/3.1.6

On 11/15/2010 09:08 PM, XIAN PAN wrote:

I installed the latest firmware : "Raw Ethernet with XCVR2450, V3.3.1git". FPGA images is "u2_rev3-20100603.bin". The OS is Fedora 13. And the version of gnu-radio is gnuradio-3.3.0.

When I run the command: #usrp2_fft.py -f 2.476G -g 45. The program can work, but I cannot click any choice box on the screen---- cannot choose the box of "Peak Hold" and others; cannot re-put the "center freq". The thing likes that the program is dead after it starts running. I only can force quit it, otherwise it cannot stop normally. And after I force quit, the following information will be shown.                                                                                                                                                                                                                                                                        

address@hidden ~]# usrp2_fft.py -f 2.476G -g 45
python: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0.

Is there anybody can help me? Thanks.   And my former problem is still here that my USRP2 + XCVR2450 only received noise rather than signal.

Thanks again.
Your "freezing" is very likely due to your machine not being up to the task of doing FFTs of data at 6.25Msps.  Try specifying "-d 40" on the
  usrp2_fft.py command line and see if that improves the usability of the user-interface.

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