I was having the same problem with my A3000 laptop. I'm now running the 595.99.02 driver from Nvidia's website, and it seems OK: glxgears, vkcube, mpv with nvdec, console switching; all that. The release notes
https://www.nvidia.com/en-us/drivers/details/278285/ say, "Fixed a bug which led to a black screen when console switching on." Please update! Thanks.
