This would have been a good demonstration… if it weren't for the Wi-Fi on my tablet dropping out a few times during this video even though the router was like 50cm away!
In this demo, I run the full Trinity desktop (because that's my current favourite Linux DE) on my Samsung Galaxy Tab A (P355) using "XServer XSDL"
"XServer XSDL" download page:
https://play.google.com/store/apps/details?id=x.org.server
The app developer's Play Store Video:
https://www.youtube.com/watch?v=ni5EA9B9kss
NOTES
1. 2:03 - I was talking about the video, not the app.
2. 15:55 - If you were running GNURoot or some other implementation of a desktop Linux distro on Android, you would select "end current session" or "log off" instead of "turn off computer". Try not to do that thing I've seen in some videos where users would just "control-C" in the terminal instead of selecting "log off" in their respective DE.