The serial number on my unit shows up as a bunch of whitespace: ``` $ swaymsg -t get_outputs | jq '.[1] | {make, model, serial}' { "make": "Unknown", "model": "XT1610UO", "serial": " " } ``` (Note: the HTML conversion squashes the spaces. There are 13 spaces in the serial field.) Normally, this is likely just cosmetic. Unfortunately, it appears the latest Google Chrome beta (90) (at least on Linux/Wayland) tries to reference the display by the serial, which is handled badly, causing Chrome to crash. That is certainly a bug in Chrome... but the serial number should also show up as something useful, not a bunch of whitespace characters. This is via the HDMI interface. I cannot test the USB-C interface on this laptop.
That's a Chrome issue, a blank serial wouldn't affect the operation of the device. No operating system needs to validate the serial number of a monitor. We have our own S/N printed on the back of the monitor as identification.