Hard to know. Will the interface be specific to driver versions? Will it require an updated kernel driver for each userspace driver as it does now? I don’t know that we have the answers.

Worth noting that Nvidia only intends to open source the kernel driver. This is only half the driver, as a userspace blob will still be required, and that will remain closed and proprietary.

I’d start with checking logs with journalctl as a privileged user. If the device disappears, there should be logs about it. Maybe that will point the way.