Gain Error Failed to initialize gain for device #-536870912: error -1071395636

[mattfox27]

When trying to run as a service I get this error

Failed to initialize gain for device #-536870912: error -1071395636

When I check the status of the service

[nrussell88]

Hi @mattfox27, can you share your config file?

[mattfox27]

`
devices:
({
type = "rtlsdr";
index = 0;
gain = 32; #Gain Setting
correction = 0; #ppm
mode = "scan";
channels:
(
{
freqs = ( 123.1, 119.0, 120.5, 132.2, 120.2, 119.3, 135.3, 124.3, 128.375, 119.>
outputs: (
{
type = "pulse";
server = "192.168.7.155";

sink = ... /* default sink */

stream_name = "Utility channels";

continuous = false;

}
);
}
);
}
);
`

[mattfox27]

I fixed it, I had the wrong gain value in my config file

[nrussell88]

I fixed it, I had the wrong gain value in my config file

Great news! Glad everything worked out well.

[mattfox27]

So I was wrong, still gives that error

Mar 15 17:37:28 airband rtl_airband[13304]: pulse: 192.168.7.155: connecting...
Mar 15 17:37:28 airband rtl_airband[13304]: Detached kernel driver
Mar 15 17:37:28 airband rtl_airband[13304]: Found Fitipower FC0012 tuner
Mar 15 17:37:28 airband rtl_airband[13304]: Failed to initialize gain for device #-536870912: error -1071395636
Mar 15 17:37:28 airband rtl_airband[13304]: Device #0: gain set to 7.10 dB
Mar 15 17:37:28 airband rtl_airband[13304]: RTLSDR device 0 initialized
Mar 15 17:37:28 airband rtl_airband[13304]: Allocating 10 zero-copy buffers
Mar 15 17:37:37 airband rtl_airband[13304]: pulse: 192.168.7.155: connection failed: Connection refused
Mar 15 17:37:38 airband rtl_airband[13304]: pulse: 192.168.7.155: connecting...
Mar 15 17:37:38 airband rtl_airband[13304]: pulse: 192.168.7.155: stream "123.100 MHz" connected

[mattfox27]

Mar 15 17:37:28 airband rtl_airband[13304]: Failed to initialize gain for device #-536870912: error -1071395636

so I was wrong, still get the error
im using a cheap blue SDR off Aliexpress not sure if that is the issue

Mar 15 17:37:28 airband rtl_airband[13304]: Failed to initialize gain for device #-536870912: error -1071395636

[R1ch1e-Lee]

Have you determined the supported gain values of your sdr dongle?

If you will install rtl-sdr and run a simple test it will show you the supported gain values. Try this:

sudo apt install rtl-sdr

rtl_test -t

This should show you information about your dongle including gain values. My NESDR dongle shows these values:

Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6

Hope this helps