Is there anyone that: * Has a Radeon card other than the R600 (and you tell by running lspci -v) * Has used my kernels to get Radeon support, and* Is willing to do some tests (not right now though) with a specially modified newer kernel version to see how it works?
Once you do lspci take a peek here and find your device name on the right. Then locate the short name, like R600 or whatever, on the left: https://cgit.freedesktop.org/xorg/driver/xf86-video-radeonhd/tree/README
