[op25-dev] Runtime error- ioctl(d_tap, TUNSETIFF, &ifr): Operation not permitted

md123 at nycap.rr.com md123 at nycap.rr.com
Mon Feb 25 00:08:13 UTC 2013

Has anyone seen this error?  i cant 
find anything on the web about this.  I already had to disable the Waterfall 
sink and the FFT sink in order to get rid of the "AttributeError: 
'gr_hier_block2_sptr' object has no attribute 'set_callback'" error.  Now OP25 
dies this way: 
Imported legacy fsk4 
Using Volk machine: ssse3_32 
RTL2832 Source block configuration: 
	Read length (bytes): 262144 
	Buffer enabled: yes 
	Buffer multiplier: 8 
	Buffer size (samples): 1048576 
	Samples per read: 131072 
	Buffer level: 50.0% 
Successfully initialised demod: "ezcap EzTV" 
Probing "e4k"...not found. 
Probing "fc0013"...not found. 
Probing "fc2580"...bad check value. 
Probing "fc0012"...not found. 
Probing "e4000"...not found. 
Could not find tuner automatically after probe 
Found RTL2832 device: ezcap EzTV (tuner: interface not implemented) 
	Sample rate range:	900001 - 3200000 Hz 
	Crystal frequency:	28800000 Hz 
Wait delay: 196.608 ms 
ioctl(d_tap, TUNSETIFF, &ifr): Operation not permitted 
Using legacy decoder_ff 

>>> Done
I'm using Unbuntu 12.10, GNUradio 3.6.3, python 2.7.3, and NooElec R820T RTL2832 
stick.  I installed GNUradio using the build script on Balint's "how to build 
page" but OP25 I had to build from source because the build script there has a 
broken link.  Any help will be much appreciated.  

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