I installed Steam on Lubuntu and wanted to play dota2 (it has source engine) and it sayed i need a 3dts driver or something but i installed it alredy. I can start dota now, but when i start a game it is not... displaying correctly. For example when i pick a hero the 3d modell is covered in some kind of a lasershow and the map...... i looked around a bit think it is because of the drivers and i should have mesa 9. Steam can show the system specs and it says that i have nouveau Gallium 0.4 on NVAA as driver and 3.0 Mesa 10.0.0-devel (git-1100093 saucy-oibaf-ppa) as driverversion and OpenGL 3.0 i am a noob on linux and need step by step guides please