Valve and Open Source Display Drivers
I just tested TF2 with open source and proprietary drivers, it's as different as chalk and cheese.
I'm running Fedora 17 with an Radeon HD5750.
TF2 runs fine with open source drivers, except the performance is bad. With the latest proprietary drivers TF2 runs fine, but everything else doesn't. For example gnome shell crashes if I connect two monitors. I even can't login if I have two monitors connected, because gnome shell hangs (with 100% cpu) at login prompt. Switching between fullscreen games and other programs is very glitchy (with the oss driver everything is just fine).
Are there any plans from valve to support the development of open source graphics drivers? I know that they did a good job with Intel. I tested TF2 on my laptop with an Intel HD3000 chipset and it just runs fine with the open source Intel drivers. If there were PCI Express cards made by Intel, I'll definitely would buy them, just because their driver isn't crap.
I would also pay (donate) for the development of performant open source drivers for AMD/Nvidia cards, but I don't know if money is enough. We could start crowdfunding the developers... I'll start off with 100€.