Comment # 3 on bug 1149716 from Daniel Bauer

(In reply to Stefan Dirsch from comment #2)
> Last thing you can try is G03 (340.xxx) driver instead of G04 (390.xxx)
> driver. It also supports your gfx card. But both are legacy drivers...

That didn't help neither :-(

With G03 installed it just reaches to a black screen with a movable cursor, but
no login screen shown...

I wonder why my card shouldn't be supported anymore. I can find it at the
Nvidia drivers site and it proposes NVIDIA-Linux-x86_64-390.129.run - which
produces the same problems.

If I'd be sure it works I'd buy a new Nvidia card, but I am afraid that "too
new" things don't work in linux - and now a bit old ones neither... 

Well, I'll have to live with nouveau, while it still works. Fingers crossed...