Yosemite, Nvidia GeForce GTX 970 - no full screen view after booting

[tess]

I've set up my Hackintosh about a year ago and it worked quite fine till now. All of a sudden it just scaled down my resolution and is displaying desktop with black borders to the edge of the monitor, like it's outputting a resolution for a screen that's smaller than mine. It just happened overnight, without messing around with anything inside Clover or anywhere for that matter.

I do have a dual monitor setup, an the other screen is smaller, than the one I'm having problems with, and I got a feeling that's somehow connected to the issue I'm having.

I've read similar problems about black border when booting in this thread, but I decided to open another thread because my problem seems to be different. When my system is booting it looks fine (it is fullscreen), yet when it boots into desktop of OSX everything scales down and is just as I explained above.

Any suggestions on how to deal with this?

Details about the build: OSX Yosemite (Clover), 4 GHz Intel Core i7, 8 GB RAM, NVIDIA GeForce GTX 970 4095 MB

 

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[tess]

I'm bumping this since I still have not found the solution.... Can anybody please provide some guidelines on where to even start to solve this issue?