Virtual Device — Serial0 Will Start Disconnected

Analysis: “virtual device serial0 will start disconnected”

• Security: Avoid opening host sockets or files by default.
• Flexibility: Allow attaching different backends later (file logging, pty, TCP socket).
• Resource management: Delay creation of host endpoints until needed.
• Testing: Simulate absent peripheral or unplugged cable state for firmware/software testing.

• Enable a getty: systemctl enable --now serial-getty@ttyS0.service (adjust tty name).
• Configure kernel cmdline with console=ttyS0,115200 if early kernel messages are needed.

: For persistent network-backed serial port issues in vSphere, adding the parameter vpxd.SerialPort.PersistNetworkBacking = "True"