Hello.

Like a linux user and one of many beta testers of Steam for Linux. I have Intel GPU, Intel GMA 4500M. This GPU doesn't support OpenGL 3.0> (GLSL 1.3>) which is needed for Source Engine games in Linux. With my GPU I can play Team Fortress 2 just fine in Windows (directx). But in Linux a still gettin' black screen.

This problem have many people:

http://steamcommunity.com/app/221410/discussions/6/846939071071956036/

http://steamcommunity.com/app/221410/discussions/6/846939071318790826/

http://steamcommunity.com/app/221410/discussions/6/846939071179947391/

My tiny opinion is - Real problem is in Source Engine, but i get this answer from Valve http://steamcommunity.com/app/221410/discussions/1/882965118606133134/?tscn=1355530489#c846939854098355972

So, only chance how to run TF2 on older intel GPUs is You. I will be glad when I get answer from you, thanks!