Bei mir ist ein ähnliches Problem. Ich nutzte lange Zeit auf dem Pi3 nur das BT-scannen.
Downgrade des Adapters bringt keine Lösung. Ich denke es geht nicht mehr seitdem ich den Pi3 mal geupdatet habe.
Node.js: v12.18.4
NPM: v6.14.6
Radar 2.0.1
JS-controller: 3.1.6
radar2.1 2020-09-27 09:37:05.206 info (17106) debug: ChangeState ack:false of radar2.1.info.connection = false
radar2.1 2020-09-27 09:37:05.151 info (17106) debug: created State radar2.1.info.connection
radar2.1 2020-09-27 09:37:05.148 info (17106) terminating
radar2.1 2020-09-27 09:37:05.147 info (17106) terminating
radar2.1 2020-09-27 09:37:05.141 info (17106) Terminated (NO_ERROR): Without reason
radar2.1 2020-09-27 09:37:05.139 info (17106) terminating
radar2.1 2020-09-27 09:37:05.106 info (17106) Adapter disconnected and stopped with dostop(null) and callback(true)
radar2.1 2020-09-27 09:37:05.104 info (17106) Unload adapter now with null
radar2.1 2020-09-27 09:37:05.091 warn (17106) Uncaught Exception: ENODEV, No such device
radar2.1 2020-09-27 09:37:05.082 error (17106) Error: ENODEV, No such device at Hci.init (/opt/iobroker/node_modules/@abandonware/noble/lib/hci-socket/hci.js:100:35) at NobleBindings.init (/opt/iobroker/node_modules/@abandonware/no
radar2.1 2020-09-27 09:37:05.080 error (17106) uncaught exception: ENODEV, No such device
radar2.1 2020-09-27 09:37:05.063 info (17106) arp-scan will use the following interfaces: [ 'eth0' ]
radar2.1 2020-09-27 09:37:05.059 info (17106) debug: use known IP list: []
radar2.1 2020-09-27 09:37:05.057 info (17106) debug: use known BT list: []
radar2.1 2020-09-27 09:37:05.051 info (17106) debug: radar2 set to flag items away if they are not seen for 2 minutes
radar2.1 2020-09-27 09:37:04.998 info (17106) found and will use '@abandonware/noble'
radar2.1 2020-09-27 09:37:04.703 info (17106) Will use l2Ping for BT scans.
radar2.1 2020-09-27 09:37:04.684 info (17106) radar2 initialization started...
radar2.1 2020-09-27 09:37:04.475 info (17106) starting. Version 2.0.1 in /opt/iobroker/node_modules/iobroker.radar2, node: v12.18.4, js-controller: 3.1.6