I use Ubuntu 12.04 with an old Intel Pentium CPU (mobile Intel GL40) and an Intel GMA 4500M onboard graphics card.
I downloaded the Linux-version of Steam and TF2 via Steam without using any kind of emulator or other programs. Since I got an error message starting TF2. I updated my graphics card driver.
Now I can start TF2 but I get strange graphics bug and cant play (for example the Valve intro is inversed combined with a strange green/black/blue pixel pattern - it is not playable although I have the feeling that I am in the main menu and hear the sound)
Is there a way to play TF2 without an emulator or at least having to download the whole thing again (windows version for example)?