ESXi 6.7 on HP ProLiant DL380 G9 and Win10 Pro VM.
Physical serial port assigned to VM and works fine under control of a service. It is assigned to device /dev/char/serial/uart0.
Runs for days without a glitch.
If I restart the VM or the service to update a piece of code or a configuration, the serial port is not available anymore, no matter how many times I do resets.
To recover, I need to:
- inhibit the serial port in the VM's Device Manager
- restart the service
- activate the serial port in the VM's Device Manager
- restart the service again.
- then it works ... until I need to restart the service another time ...
Anyone has an idea what the cause may be ... and, most importantly, what's the solution?