Comment # 3 on bug 939594 from Dr. Werner Fink

(In reply to Stefan Dirsch from comment #1)

Is this really the *latest* systemd?  Try SUSE:Maintenance:578 for
SUSE:SLE-12:Update from intrernal build server or systemd from
Base:System:Legacy from the OBS.

Beside this I see

gdm-x-session[1113]: (II) modesetting: Driver for Modesetting Kernel Drivers:
kms
gdm-x-session[1113]: (II) FBDEV: driver for framebuffer: fbdev
gdm-x-session[1113]: (II) VESA: driver for VESA chipsets: vesa
gdm-x-session[1113]: (++) using VT number 7
gdm-x-session[1113]: (EE)
gdm-x-session[1113]: Fatal server error:
gdm-x-session[1113]: (EE) xf86OpenConsole: Cannot open virtual console 7
(Permission denied)
gdm-x-session[1113]: (EE)
gdm-x-session[1113]: (EE)
gdm-x-session[1113]: Please consult the The X.Org Foundation support
gdm-x-session[1113]: at http://wiki.x.org
gdm-x-session[1113]: for help.
gdm-x-session[1113]: (EE) Please also check the log file at
"/home/olaf/.local/share/xorg/Xorg.0.log" for additional information.
gdm-x-session[1113]: (EE)
gdm-x-session[1113]: VGA Arbitration: Cannot restore default device.
gdm-x-session[1113]: (WW) xf86CloseConsole: KDSETMODE failed: Bad file
descriptor
gdm-x-session[1113]: (WW) xf86CloseConsole: VT_GETMODE failed: Bad file
descriptor
gdm-x-session[1113]: (EE) Server terminated with error (1). Closing log file.
gdm-x-session[1113]: Unable to run X server

and this is not systemd-logind