While we're at it it's worth highlighting that some genius behind the intel tearing bollocks is responsible for tearing on linux desktops unfixed for over a year! Until Xorg 1.15 and Mesa 10 land in distros of those affected by the issue.
2. I failed to get any interesting results on intel's preferred method of repainting.
*or has performance crippled by ~20%, which is same, as far as I'm concerned.