Upgrade from Mavericks failed

[Wildleecher]

After logging out and logging in as another user the flickering was almost completely gone, and it was still after logging back in to my user. But soon the GUI froze. Closing the lid caused a very short sleep. When I opened it again the desktop was back, looking very disturbing. Changing the user got this away again, but not all the artifacts. There is a flaw in my configuration, even considering the many reports I read about the HD3000. I will take a break for a week or two.

 

[EliteMacx86]

After installing the security update 2020-006 the screen keeps flickering all the time, rendering the laptop almost useless. Before that it worked quite well when it did'nt hang. What was changed by this update?

NVIDIA Drivers.