This has to be a Very Dumb Question, but what is the difference
between a "display manager" and a "desktop manager"?
I'm trying to run MATE on F28, and succeeding to the extent that
I do have a more or less MATE-like GUI, but only by grace of still having
an F26 rescue kernel. (Two PCs without that kernel are unable to give any
GUI at all. All I can do is keep a console open and run dnf upgrade once
or twice a day, using an F28 rescue kernel, with reboots whenever any
kernel is mentioned.) And this GUI does not afford me the panel applets I
use most.
In quest of better, I've been experimenting with various apps
called *dm. Most do better than lightdm (which I started with), but not
yet a whole lot better.
Some will say I oughtn't to run Fedora at all, but at this point
my accumulated ignorance has reached a level where any other distro would
tie me up in even more knots.