I confirm. this is working! With opensource ATI drivers!!!
The FGLRX days are counted!
* latest git kernel with the previous one line patch for disabling a part of the cs checker
. You can enable KMS if you want.
* latest git libdrm
* latest libtxc_dxtn (it's a couple of month old but it's working)
* latest git Mesa
* latest git xf86-video-ati
* latest git xorg-server+dependencies
you need to set the environement variable R600_ENABLE_S3TC=1. like "export R600_ENABLE_S3TC=1" juste before lauching EVE in the same terminal. You can also set it more system wide so it will work with other games without setting the env each time.