Update:
Looking at the processes while running it appears both 'Ubuntu' and 'Ubuntu on Wayland' modes _both_ run Ubuntu on Wayland in reality. There appears to be no regular X mode in Ubuntu 17.10...
Which makes this patch even more important.
gdm 843 0.0 1.2 271332 48588 tty1 S+ 15:22 0:00 /usr/bin/Xwayland :1024 -rootless -noreset -listen 4 -listen 5 -displayfd 6 ccheney 1345 0.3 1.2 293488 52000 tty2 S+ 15:22 0:00 /usr/bin/Xwayland :0 -rootless -noreset -listen 4 -listen 5 -displayfd 6
Update:
Looking at the processes while running it appears both 'Ubuntu' and 'Ubuntu on Wayland' modes _both_ run Ubuntu on Wayland in reality. There appears to be no regular X mode in Ubuntu 17.10...
Which makes this patch even more important.
gdm 843 0.0 1.2 271332 48588 tty1 S+ 15:22 0:00 /usr/bin/Xwayland :1024 -rootless -noreset -listen 4 -listen 5 -displayfd 6
ccheney 1345 0.3 1.2 293488 52000 tty2 S+ 15:22 0:00 /usr/bin/Xwayland :0 -rootless -noreset -listen 4 -listen 5 -displayfd 6