Aa always, I got kernel sources;

    kernel-default-4.19.0-3.1.g6216efb.src.rpm

    kernel-source-4.19.0-3.1.g6216efb.src.rpm

    kernel-syms-4.19.0-3.1.g6216efb.src.rpm

from 

  http://www.download.opensuse.org/repositories/Kernel:/stabel/standard/

then compiled. After installing these, I rebooted. 
But X didn't start, and login message appeared.
I login as root, and tried to run 

  # startx

this gave me an error message;

  There is no link /var/lib/X11/X to the correct X server binary.

What's wrong with me?

Thanks,

Bug ID	1114267
Summary	with kernel-default 4.19.0-3.1, don't start X
Classification	openSUSE
Product	openSUSE Distribution
Version	Leap 42.3
Hardware	x86-64
OS	Other
Status	NEW
Severity	Major
Priority	P5 - None
Component	Kernel
Assignee	kernel-maintainers@forge.provo.novell.com
Reporter	nomiya@galaxy.dti.ne.jp
QA Contact	qa-bugs@suse.de
Found By	---
Blocker	---