I had a vague recollection of this was possible, so I was glad to find it back after having recovered from all cancer treatments at [Wayback] Use a second laptop as an extended monitor with Windows 10 wireless displays – Scott Hanselman’s Blog.
The feature is called “Miracast” and has a built-in Windows 10 implementation for both sending and receiving not just over WiFi, but also over the local fixed ethernet network: [Wayback] Miracast on existing wireless network or LAN – Surface Hub | Microsoft Docs.
With such support, I’d expected an “it works out of the box” experience. It is far from that, so let me show what I bumped into and how I finally did not get it working.
TL;DR
- Windows will tell you when it doesn’t work
- Windows won’t tell you why it doesn’t work
- The tooling to try to find out why it doesn’t work is not sufficient: documentation is scarce and far from complete
When out of luck
I tried two machines with Intel processors having built-in graphics engines.
The Wiert Corner - irregular stream of stuff 