Hi guys, hope you can get me out of this misery - frustration :(...
Having endless trouble installing gqrx to work with airspy and about to give up with gqrx AND Linux…
It appears there has not been too much progress with successfully installing SW in Linux over the last 30 years - I must say, it's just as bothersome as it had been back then and works only sporadically. Although I'd so much like to give Windoze the boot...
Have read other comments here but without success...
Am essentially Linux newbie again after a 30 year break and had gqrx running once with HF+ only, running Linux Mint / Ubunto.
One night by playing around for >>1 h I finally got it to find the HF+. I don't remember hat I did...
One night (after using gqrx for 3 days) Libre Office decided to freeze the PC and that was the last time gqrx worked, it claims it can't find any airspy – again.
I have an HF+ and an R2 and run gqrx 2.11.2.
It had never found
any airspy products in the I/O device list since although it should be apparently now out of the box supported. Hmm.
I don't know how many times I have executed the uninstalling and re-installing procedure posted on the gqrx/ubunto page to no avail. Thought that the purge would delete everything but although not in the drop down list under I/O devices it remembers the 1st working configuration it used, and when I select OK nothing happens.
Config file seems to be the default one.
Comand line gives this response, looks like it can't find a thing…
qwerty@qwerty-OptiPlex-755 ~/.config $ gqrx
Controlport disabled
No user supplied config file. Using "default.conf"
gr-osmosdr v0.1.x-xxx-xunknown (0.1.5git) gnuradio 3.7.10
built-in source types: file osmosdr fcd rtl rtl_tcp plutosdr miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya
FM demod gain: 3.05577
Resampling audio 96000 -> 48000
IQ DCR alpha: 1.04166e-05
Using audio backend: auto
BookmarksFile is /home/qwerty/.config/gqrx/bookmarks.csv
getDeviceList : Available input devices:
"PlutoSDR"
"RFSPACE SDR-IQ Receiver"
"RFSPACE SDR-IP Receiver"
"RFSPACE NetSDR Receiver"
"RFSPACE Cloud-IQ Receiver"
"RTL-SDR Spectrum Server"
"Red Pitaya Transceiver Server"
"Complex Sampled (IQ) File"
Loading configuration from: "default.conf"
Configuration file: "/home/qwerty/.config/gqrx/default.conf"
gr-osmosdr v0.1.x-xxx-xunknown (0.1.5git) gnuradio 3.7.10
built-in source types: file osmosdr fcd rtl rtl_tcp plutosdr miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya
FATAL: Failed to open Airspy HF+ device (-1)
Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.
********************
********************
No change in output device:
old:
new:
Failed to set RX input rate to 768000
Your device may not be working properly.
IQ DCR samp_rate: 768000
IQ DCR alpha: 1.30208e-06
Changing NB_RX quad rate: 96000 -> 768000
Requested sample rate: 768000
Actual sample rate : "768000.000000"
New FFT rate: 25 Hz
Requested bandwidth: 0 Hz
Actual bandwidth : 0 Hz
setFreqCorr : 0 ppm
New LNB LO: 0 Hz
updateHWFrequencyRange failed fetching new hardware frequency range
New mode index: 6
Filter preset for mode 6 LO: -2800 HI: -100
Generating taps for new filter LO:-2800 HI:-100 TW:540 Taps: 429
setFftRate to "25 fps"
New FFT rate: 25 Hz
New FFT rate: 25 Hz
setFftSize to "8192"
New FFT rate: 25 Hz
Generating taps for new filter LO:-2800 HI:-100 TW:540 Taps: 429
Well that is about all the info I can give you from a very basic Linux user.
I hope it makes some sense and it would be so great to get it all to work again.
Thanks
Mike
Mike,
1) one feels your pain, as a number of other list members will;
2) the suspicion is that you are having USB problems. A deep root cause analysis goes back to cheapskate USB implementations on-chip, even though one presumes the implementors should have been able to read the specifications (buggy chips affect, in general, all OSes);
3) turning to practical stuff, it looks as if the Airspy (HF or R2) is not being recognised as a USB peripheral, and there may also be a problem with the configuration file. Having faced similar problems in the past, a two step fault-finding is indicated:
a) to make sure that a plugged-in Airspy has been recognised
b) to reset the config file
4) Linux should recognise a USB peripheral when it is plugged in, or when it is plugged out. There are associated messages sent to the kernel log, available via the dmesg command.
Bring up a terminal [Ctl-Alt-T, or via the menu], and issue a command:
dmesg | grep usb
Then search for the lines which relate to whichever Airspy is connected. If such lines are found, and look convincing, then USB is working correctly. If such lines are not found, then there is an interconnection problem. The causes could be: a bad cable, a dirty or broken connector, a motherboard problem. It is unlikely to be a Linux driver problem, since your PC is very, shall we say, mature.
If the Airspy is not found, then reboot the PC and see if it is found after the reboot. If not, try the AIrspy in a different USB socket. If the Airspy remains unfound, then look for causes as listed above.
If the Airspy is still not present, try plugging in a different USB peripheral, such as a camera, a second keyboard, pretty much anything, and check that has, or has not, been found using the dmesg procedure noted above.
If the Airspy is not found, but some other peripheral can be,
then the problem may be that the Airspy draws more current
than the USB port can supply. Beware: unpowered USB hubs
are not suitable for this class of peripheral. A host port
for USB 2 should be able to source 500mA at 5V. In the past some
USB ports could not provide this much current (no-one will ever
need more than 300mA syndrome).
5) When there are problems with the GQRX configuration file, there are two possible solutions:
a) simply delete the file ~/.config/gqrx/default.conf, and then restart GQRX [~ is the home directory],
b) start GQRX from the command line with a parameter:
gqrx -r
That resets the default configuration file to the built-in defaults, and throws up the input selector dialog(ue) box. The options include a number of network options, plus whatever USB connected peripherals have been recognised.
6) If you are still having no success, then there may be
OS problems. If stages 4) and 5) still result in no success, you
may wish to consider re-installing the OS. [As a newcomer, or
old-timer, it may still be quicker than trying to sort out half,
or not-at-all, understood configuration files.] Thankfully, the
days of installing from 30 floppy disks are long since passed.
With an OS installed, and even if you don't re-install, adding synaptic for package management is strongly recommended.
HTH, Good luck,
Robin, G8DQX
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