Comment # 32 on bug 1151290 from Dr. Werner Fink

(In reply to Fabian Vogt from comment #30)
> While sddm using abort() to handle such critical errors isn't right, doing
> it differently wouldn't fix the original issue. X still crashes.

Ohnmm ... X does not crash ... that is the X server is up and shows its black
background .. using the XUATHORITY variable with the sddm path I can start an
xterm on  the black screen.

The sddm-helper seems not be allowed to open at least one of NVIDIA's devices
below /dev ... what I expect is a valid error messages bfore doeing an abort().