CubicSDR not seeing SoapyServer but

… SoapyServer sensing CubicSDR probing.
I’m in the process of setting up (for the first time) SatNOGS on a RasPi4 and so far so good until I come to test the SoapyServer with CubicSDR running on the same network (eth) but it cannot find the RTL-SDR. I’ve tried both the RTL-SDR V3, and the NooElecSDR Mini2.
The server output is:######################################################

Soapy Server – Use any Soapy SDR remotely

######################################################
Server version: 0.5.2-unknown
Server UUID: 03aeb447-2d08-1671-8567-0b2a007f0101
Launching the server… tcp://0.0.0.0:55132
Server bound to 0.0.0.0:55132
Launching discovery server…
Connecting to DNS-SD daemon…
[INFO] Avahi version: avahi 0.7
[INFO] Avahi hostname: satnogs
[INFO] Avahi domain: local
[INFO] Avahi FQDN: satnogs.local
[INFO] avahi_entry_group_add_service(satnogs._soapy._tcp)
Press Ctrl+C to stop the server
SoapyServerListener::accept(192.168.178.20:51484)
[INFO] [UHD] linux; GNU C++ version 8.3.0; Boost_106700; UHD_3.15.0.0-4satnogs1
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM input
RtApiAlsa::getDeviceInfo: snd_pcm_open error for device (default), No such file or directory.
SoapyServerListener::close()

And CubicSDR says no RTLSDR found, either by auto or by manually inserting the i/p address.

Can anyone please suggest a fix for the problem?

Many thanks in advance.

Roger M0ROJ

[SOLVED] Faulty USB socket on RasPi4.
Now working and looking good - so far.

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