The Problem: Polygon tearing in upper left corner of screen during initial loading screen and then when panning in game. Polygon appears black during loading screen (see attachment), then goes away about midload. Polygon reappears (but as transparent) when panning. Temporary Resolution: Disable Crossfire in Catalyst Control Center System: AMD Phenom II 945 8 gig RAM KDE Desktop Debian Jessie Crossfire 6870's Proprietary Drivers 14.9(?) from Debian Non-Free Repository
Any additional information needed, just ask.
Edit: I can not get the image to attach. Using Basic and Advanced uploader. Tried Firefox and Internet Explorer. Presuming moderator approval needed as this is a new account (even though the upload section doesn't make that clear).