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I updated GPU drivers in order to get Blender 2.80 working on my toaster. It does work now, and everything else is okay or maybe even better than usual, except MMD shows black screen.
Rendering to image/video still works, camera coordinates change when I move it, basically everything seems to be working, but it doesn't show preview in MMD itself.
There's no problem I switch to integrated GPU (Intel HD Graphics), but that gets me like 3 fps with Ray-MMD or sub-30 fps with more than 2 models/1 relatively high poly model without any effects.
I tried older MMD versions (I use 9.31 x64), the problem remains.
MMM works without issues, but it can't fully substitute MMD.
The chances are very slim, but maybe someone here had this problem and solved it? I will reinstall old drivers as a last resort, but I really don't want to do that.