Thank you Wollie. It did keep on reboots, and is working now after recent updates this Month.
The links are a good start, thanks. I betray my frustration at seeing how to move from a casual user, and when needing help being a bit of a plug and fixer, toward seeing why the fix actually works, be it printing, the desktop, or whatever. The info I find can be very useful if I find the right info, but often is not understandable to a beginner… lots of detail but not much structure towards working systems. And I do not mean details of the coding choices, just what are the working parts and how do they interact, be it printing, a desktop, a file manager, or whatever. I have seen very few manuals that even briefly explain why for entries, but it keeps the manual shorter and is mostly a good start. And of course, these are moving targets to some extent.
I did not mean to offend when I say something “broke”. But a $40,000 car is not working even if it is just runs out of fuel. And despite all good efforts, if it no longer works, a functional problem has been created. I have found software gets changed mostly for the better; not all effects are always immediately foreseen. And if the system has multiple components each developed by different groups, coordination is an interesting challenge. Thankfully , generous people devote time for development, and aid.
I appreciate your help.