I finally decided to give Wayland a try, but it hasn't gone very well.
I started by enabling the wayland use flag in make.conf, and let emerge
make all required updates. I also added the gbm use flag, which only
changed one or two packages, Based on various wiki and forum posts,
I'm using "dbus-run-session startplasma-wayland" as the last line in
.xinitrc, and launching with startx.
I have two monitors which run just fine at 1920x1080 in xorg. Using
wayland, the system seems to use only a single 1024x768 area in the
upper left of the left monitor. The mouse can move all over both
monitors (small white x) but all apps are restricted to that
constrained area. There is no toolbar. I have tried googling for
wayland and various combinations of dual monitor and limited
resolution, but haven't found anything at all relevant that isn't at
least four or five years old. I've looked through multiple wikis and
forums, and not found anything helpful.
Any pointers to some docs I might have missed? Any thoughts on whether
this should be possible? I've got an AMD GPU. I realize there may be
some applications that still won't play nice with Wayland, but I expect
that the basic stuff (especially most KDE stuff, including kwin) should
work.
Thanks for any suggestions.
Jack