Comment # 40 on bug 954433 from Egbert Eich

(In reply to andreas bittner from comment #39)
> No problem, just reply back in this bugreport when you need me to do more
> stuff. Most or all of these machines I am using with opensuse are actually
> not being used for desktop activity, and mostly I can do remote work only.
> So I dont know what the machine or if it displays anything.
> 
Ok, so you don't even have a monitor connected.
In this case you should probably disable the display manager or boot into the
multi-user.target (aka runlvl 3).

> So just to sum it up, most likely as you found out, it is a kdm related
> (e.g. upgraded opensuse 13.2 default install to leap 42.1, the kdm stuff
> stays, and messes up the xorg and related stuff related to libdbus.
> 
> And you cannot repro this scenario? Clean 13.2/x64 to leap/42.1? Maybe it is

Don't know, haven't tried this update scenario. Will do maybe.

> also related to connected or disconnected (turned off or no at all) monitors
> with these opensuse machines, as my machines are either connected to some
> keyboard/video/mouse via some kvm switch sharing input/display device with
> some other (e.g. windows) machine or they dont have a monitor connected at
> all (some of them).
> 
> Maybe this helps.

Ok, thanks for the info, will give it a try!