Comment # 5 on bug 1095796 from Laurence Tyler

If I may join in and offer some information as well... I have the same problem
with my ThinkPad T450s, which currently runs Leap 42.3 without any problem.

The touchpad and trackpoint are both non-functional in LEAP 15.0 installer.
Both devices are working if I boot the KDE Live CD version of LEAP 15.0

The same problem exists in Tumbleweed installer (snapshot 20180530) - neither
touchpad nor trackpoint are working - and, similarly, both are working if I
boot the Tumbleweed KDE live CD.

It does seem that there is a kernel difference between the LEAP 15.0 installer
and the installed system:

LEAP 15.0 DVD (installer): 4.12.14-lp150.12.4-default (broken)
LEAP 15.0 KDE (live CD):   4.12.14-lp150.11-default (works)

Checking the same for Tumbleweed:

20180530 DVD installer: 4.16.12-default (broken)
20180530 KDE live CD:   4.16.12-1-default (works)

So in both cases it looks as if the kernel was revised in some way between the
installer and the live system. I have not (yet) borrowed a mouse and gone ahead
with the installation to see what happens when I boot an installed system
instead of a live CD version or the installer.

Just to confirm, I am using X11, not Wayland.