Virtual Device Serial0 Will Start Disconnected -

The easiest way to stop this message is to remove the device that is trying to use the serial port. the virtual machine. VM > Settings (or right-click the VM and select

This keeps the hardware in your configuration but prevents VMware from trying (and failing) to initialize it during startup. Method 3: Point to an Output File

The statement “virtual device serial0 will start disconnected” typically appears in virtualization, emulation, or hardware abstraction contexts (e.g., QEMU/KVM, VirtualBox, containerized device passthrough, or network/device simulators). It means the emulated or virtual serial interface named serial0 is configured so that, at VM or system boot, it has no active connection endpoint—no host pipe, socket, file, console, or physical device attached. The device exists in the guest’s device tree but is not linked to any I/O endpoint until explicitly connected.

Another application on the host machine is currently using the physical COM port. virtual device serial0 will start disconnected

typically occurs in VMware Fusion or Workstation after an update (specifically VMware Fusion 13.5 Workstation 17.5 ) because support for virtual printing has been discontinued

-chardev socket,id=serial0,path=/tmp/serial.sock,server=on,wait=off \ -device isa-serial,chardev=serial0

For the vast majority of virtualized workloads, it is harmless informational output. But if serial communication is critical to your guest OS or application, the warning serves as a useful reminder to attach your virtual cable before booting. The easiest way to stop this message is

A single line of text appeared on the terminal: WHO IS PROBING THE SILENCE?

For more detailed guides, you can visit the Broadcom/VMware Knowledge Base or the VMware Fusion community discussions . If you’d like, let me know:

The warning "Virtual device serial0 will start disconnected" is a common message that appears when starting a virtual machine in VMware products like Workstation, Fusion, and ESXi. While alarming at first glance, this message is typically harmless, but understanding its origins and implications is essential for efficient management of virtualized systems. Method 3: Point to an Output File The

The "virtual device serial0 will start disconnected" alert is a benign warning rather than a critical system failure. It serves as a reminder that your virtual environment is requesting hardware capabilities that your physical host cannot provision.

Full log example:

Depending on whether you actually need the serial port, there are two main ways to handle this. Method 1: Remove the Serial Port (Recommended)