Comment # 49 on bug 936842 from Stefan Dirsch

Ok. Whatever. What I did now was that I've updated a regular SLES12 system with
intel graphics card with X11:XOrg:42 repo. I noticed that I also needed to
update xf86-input-evdev driver (probably no issue for openSUSE:42, if this got
recompiled with the new X input API version). 

Bare Xserver then shows me:

# grep EE /var/log/Xorg.0.log
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 10669.875] (EE) systemd-logind: failed to take device /dev/dri/card0:
Operation not permitted
[ 10670.013] (EE) systemd-logind: failed to take device /dev/input/event5:
Operation not permitted
[ 10670.023] (EE) systemd-logind: failed to take device /dev/input/event4:
Operation not permitted
[ 10670.024] (EE) systemd-logind: failed to take device /dev/input/event0:
Operation not permitted
[ 10670.025] (EE) systemd-logind: failed to take device /dev/input/event1:
Operation not permitted
[ 10670.026] (EE) systemd-logind: failed to take device /dev/input/event2:
Operation not permitted
[ 10670.027] (EE) systemd-logind: failed to take device /dev/input/event6:
Operation not permitted

But everything works AFAICS. Same applies to X started via gdm.

# grep EE /var/log/gdm/:0.log
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(EE) systemd-logind: failed to get session: PID 2702 does not belong to any
known session

GNOME session works fine though. 

So currently I believe we need an update for systemd-logind. And the GNOME
update broke something in addition ...