I really appreciate the Linux support. I bought the Valve complete pack to encourage you.
I'm running Ubuntu 12.04 LTS x64 with Gnome 3. I've got a AMD Radeon HD 6800 running 3 1920x1200 displays. I'm running the latest Catalyst 13.4 directly from the AMD website.
Here's the issues I've seen thus far: * Crash to desktop on second level (streets) of first campaign. * Hang when changing video settings. The audio stutters, and sometimes if you wait a couple minutes it comes back to life. * Subtitles show the translucent box, but no text. I've seen it work once or twice, but not most of the time. * Audio settings not saving, keeps reverting to headphones. * The game played at a reasonable speed yesterday on max resolution, highest settings, but today I had bad 6fps, super laggy no matter what settings. After logging out, and back in, I could get resonable performance with highest settings, but at 1440x900.