Virtual Machines

ddcutil can be built in a virtual machine. However, when using the built-in video drivers, loading i2_dev does not create /dev/i2c-* devices, either on VirtualBox or VMware. This is as expected, since DDC features affect the physical monitor, and the built-in virtualized video drivers do not implement I2C.

However, ddcutil will work in a virtual machine if using a normal video device driver with PCI passthrough, so that the device driver is actually controlling a real monitor.