Yes, it’s clearly a driver bug in the nVidia binary blob. And yes, it’s not fixed or reproduced by nVidia.
I lost hope on this one…they won’t fix or even comment on it until they’re able to reproduce it internally. The Acer monitor seems to be uncommon in the US so they don’t have it at their testing farm. In the other thread I’ve offered any help they need to track the bug down…I haven’t got a response from any of the nVidia guys.
So the only thing we can do is pray…or buying a display card from another manufacturer…
It seems the driver quality of the nVidia Linux binary blob is decreasing with the success of the platform as gaming environment. I used nVidia cards for years without any serious problems, since the announcement of Steam for Linux the bugs seems to increase a lot.