I have a Sony VAIO Notebook (VPCSB1V9R) with hybrid graphics (Intel + Radeon HD 6400M/7400M Series) with Linux Mint 17.2 64-bit and latest in repositories fglrx (15.200) installed.
When I wake up the computer after sleep picture on a desktop becomes artefacted. When I play War Thunder on Low or Ultra low video settings after 1 or 2 minutes I get artefacts too (see screenshots). I tried drivers version 15.200 and 13.350 with the same result.
Playing same game on Windows doesn't produce any artefacts.
I attached hardware specs and screenshots of the problem.