Did it again. Updated some stuff on testing and got into X trouble. It finally fixed itself.
Apparently when i was seeing black screen nvidia driver was probing for up to 5 displays. Wait till it hits stable but looks like things are getting sweat in the video department and remember old broken behavior might not be the same as new broken looking behavior. For a minute there I thought GTK was going to break and leave it broken for weeks again cause it couldn't configure display.