Airspy R2 with Gqrx on Raspberry Pi

[Michael Finley]

I installed Gnu Radio through a fresh Raspbian distribution repository installed on my Raspberry Pi 3. I installed Gqrx from Github following these commands from the gqrx.dk site:

$ git clone https://github.com/csete/gqrx.git gqrx.git
$ cd gqrx.git
$ mkdir build
$ cd build
$ cmake ..
$ make

I installed the Airspy drivers following the github airspy instructions:

wget https://github.com/airspy/host/archive/master.zip

unzip master.zip

cd host-master

mkdir build

cd build

cmake ../ -DINSTALL_UDEV_RULES=ON

make

sudo make install

sudo ldconfig

When I try to run gqrx with ./run_gqrx.sh I get the attached image as a response:

I'm not sure where to go from here in terms of trouble shooting, I don't understand what that readout is letting me know aside from that a lot of things aren't being found/working right. How do I enable the controlport? A lot of the readout mentions files and directories not existing, should I attempt another fresh install of everything and see if that issue persists? How do I go about fixing the "Unknown PCM cards"? 

I don't know if the issue is really with the Airspy but Gqrx doesn't seem to be finding any devices to use.

When I type 'lsusb' the Airspy doesn't show up, which is why I think the Raspberry Pi 3 is having trouble finding it, anyways, regardless of Gqrx, but I could be mistaken.

I can provide more information but that is what I know about it thus far.

[Alexandru Csete]

Michael,

What exactly are you trying to do???

I am seriously confused by why you are (1) installing gnuradio from Raspbian (2) build things from source probably in the wrong order and (3) then trying to use the run_gqrx.sh script from my binary package...

http://gqrx.dk/download/gqrx-sdr-for-the-raspberry-pi

Are the instructions here really that difficult to follow?

Alex

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[Michael Finley]

Sorry I'm fairly new with most of what I'm working with. I apologize for that.

I tried following those instructions you mentioned upon first trying to get Gqrx working on my Pi but wasn't able to find any resolution.

I tried the instructions you linked to again and got this readout below:

pi@raspberrypi:~/gqrx-2.6-rpi3-2 $ ./run_gqrx.sh

Starting gqrx...

libEGL warning: DRI2: failed to authenticate

Controlport disabled

ALSA lib confmisc.c:768:(parse_card) cannot find card '0'

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory

ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory

ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory

ALSA lib conf.c:4738:(snd_config_expand) Evaluate error: No such file or directory

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM sysdefault

ALSA lib confmisc.c:768:(parse_card) cannot find card '0'

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory

ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory

ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory

ALSA lib conf.c:4738:(snd_config_expand) Evaluate error: No such file or directory

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM sysdefault

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline

ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused

ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused

ALSA lib confmisc.c:768:(parse_card) cannot find card '0'

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory

ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory

ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name

ALSA lib conf.c:4259:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory

ALSA lib conf.c:4738:(snd_config_expand) Evaluate error: No such file or directory

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM dmix

Cannot connect to server socket err = No such file or directory

Cannot connect to server request channel

jack server is not running or cannot be started

No user supplied config file. Using "default.conf"

gr-osmosdr b6e4041f (0.1.5git) gnuradio 3.7.10.1

built-in source types: file fcd rtl rtl_tcp hackrf rfspace airspy soapy redpitaya 

FM demod gain: 1.52789

IQ DCR alpha: 1.04166e-05

PortAudio V19-devel (built Feb 21 2014 06:46:01) (version 1899)

Number of audio devices: 0

Using default audio device

./run_gqrx.sh: line 18:  1113 Segmentation fault      gqrx $1 $2

I saw this issue on github (https://github.com/csete/gqrx/issues/478), would my situation be similar?

I appreciate all the help I can get, thank you for your time!

Best,

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[Alexandru Csete]

make sure you start with a fresh installation of Raspbian on the SDRcard so that you don't have your previous installs (raspbian / source) left over.

If it doesn't work, try running the setup_gqrx script in a terminal to see if it gives any errors. It requires "sudo" and there may have been some changes in Raspbian since the release.

Alex

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[Michael Finley]

Hey!

I started with a fresh raspbian image and was able to have everything work properly just fine.

I figure I was still getting comfortable with Linux command line stuff and I was messing things up with the first set-up without knowing.

Works like a charm now.

Thank you!

Best,

Finley

[Alexandru Csete]

Glad to hear you got it working, thanks for the update! I was getting worried that something might have changed in the operating system.

Enjoy the program!

Alex

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