Im *still* experiencing graphics issues, even after the 10.10.3 supplemental update
Running a late 2012 Mac mini 2,3 Ghz i7 with HD Graphics 4000 on 2 x Thunderbolt Display causes occasional on screen digital noise eventually ending up in a kernel panic.
Already ran the hardware test several times resulting in no problems found
Downgrading seemed to resolve the issue (which came up after the original 10.10.3 update), so its definitely software related
Im already sorry for downloading the supplemental update. Will have to do the (time consuming) downgrading process form time machine once again I guess
Very frustrating, since my workflow (paperless office) depends on reliable machine