Just adding that the issue is still there on first start of the radio after powering on the Pluto and visual gain set to 0dB . I have to touch the hardware gain setting to get the display back to normal. Seems like the hardware gain is set to maximum (73dB) after starting a newly powered on Pluto. When this occuirs, the "Radio PlutoSDR> Error writing Channel attribute hardwaregain = 50, error 95, Unknown error" appears in the logfile.