Missing RADIO_STATUS msg with RFD900+ on Ubuntu

I’m having a weird issue where while being on ubuntu I am not receiving the RADIO_STATUS msg from the connected RFD900+ radio. I’m also getting random “Data Link lost” warnings while flight data is transmitted without interruption.

Radio as flashed withRFDSiK V1.91
Radio setting are the default for Mavlink transition
Everything works fine on windows.

Any Ideas?