L4D2 beta for linux is very slow on intel ironlake's GPU

[forabozo]

Using the last development branch of MESA (version 9.2), it is possible to run L4D and team fortress 2 on any first generation intel GPU. However, L4D for linux is very slow comparing to the windows version (it is unplayable in linux when there is lots of zombies).
I noticed that windows uses 100% of CPU all the time while running the game, but the linux version uses only 20% of CPU during the most intensive parts of the game.
Is it possible to use more of the CPU power to improve the graphics on linux?

[Tommy_CZ]

Same here, SandyBridge, Macbook Air 13", intel HD3000, Ubuntu 12.04.2.
Terrible performance, no matter what settings I set, unplayable.

[Tommy_CZ]

I will try to enable xorg-edgers, but I do not want to use it regulary, as it can break my Ubuntu.
Now I have lts-quantal (xorg) enhancement enabled and lts-raring (linux) enhancement enabled.

[kony]

I have third gen CPU (so HD 4000 GPU) and the game freezes for one second from time to time in the worst possible moment so it's kind of unplayable

[Alice]

I think its because of the many things in it. It's possible to run a giant map and the game is functional (not fast but playable) on last man on earth ON A ♥♥♥♥♥♥♥ NETBOOK

[bob]

afaik L4D2 uses a later version of OpenGL in the Linux port that is not supported by first gen integrated Intel HD cards.