gqrx freezes with RTL-SDR

[Mike Markowski]

Hi all,

I can use my rtl-sdr fine using gr-osmodr:

  rtl_fm -f $FREQe6 -M wbfm -s 200000 -r 48000 - | aplay -r 48k -f S16_LE

I also have had success with gnuradio-companion.  Yet when I start up gqrx, I get a message saying it has detected problems with the configuration, which is:

I/Q input
 Device Realtek RTL2838UHIDIR SN: 00000001
 Device string rtl=0
 Sample rate 1500000
 Bandwidth 0 MHz
 LNB LO 0 MHz

Audio output
 Device Default
 Sample rate 48 kHz

and will ask "Do you want to edit settings?".  I've played around with them using commercial FM settings, etc., but no luck.  Each time gqrx starts I see the noise floor start to come up, then after maybe a half second the program freezes.

Also, I'm using gnudradio 3.7.6.1 on a gentoo box (~x86) and tried both the gqrx binary from the web site as well as compiling source.  Same result.  :-(

Any ideas what I'm doing wrong?

Thanks,
Mike

[Mike Markowski]

Forgot say that when I start gqrx I get the following output.  - Mike

 $ gqrx
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.6.1
built-in source types: file rtl rtl_tcp
Using Volk machine: avx_32_mmx_orc
Failed to truncate cookie file: Invalid argument
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Failed to truncate cookie file: Invalid argument
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.6.1
built-in source types: file rtl rtl_tcp
Using device #0 Realtek RTL2838UHIDIR SN: 00000001
Found Rafael Micro R820T tuner
Exact sample rate is: 1500000.014901 Hz
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600
Could not resolve property : pattern10600