Chromium can't open serial port on ubuntu 22.04

[ogra]

the serial-port interface should work well (with USB-Serial adapters at least) if you enable hotplug support (which dynamically creates the slot when plugging in the adapter), it probably makes sense to add the plug “just in case” so people can optionally connect it if needed…

Hotplug support

Hotplug support gives snaps the ability to integrate with Linux’s USB hotplugging and Udev device management subsystem. This enables snaps to recognise specific classes of device and create corresponding system slots when a device is connected. Developers wishing to add hotplug functionality to their own interfaces should see Developing hotplug interfaces. Hotplug support is currently under active development, and will become widely available with a future release of snap…