I have a Sunblade 150 (same base hardware as the 100's) and am having the same problem. I have Gentoo successfully running xorg-7.1.1 with ati drivers and 2.6.20 kernel. However on Gentoo, the ati framebuffer is know to cause heartburn with < 2.6.20-gentoo-r4 kernels and Xorg so the vga framebuffer is used instead. 2.6.20-gentoo-r4 is suppose to allow this again. Not sure if this is a gentoo patch to vanilla or not.
Timo: Any update regarding support for Sunblades?
I have a Sunblade 150 (same base hardware as the 100's) and am having the same problem. I have Gentoo successfully running xorg-7.1.1 with ati drivers and 2.6.20 kernel. However on Gentoo, the ati framebuffer is know to cause heartburn with < 2.6.20-gentoo-r4 kernels and Xorg so the vga framebuffer is used instead. 2.6.20-gentoo-r4 is suppose to allow this again. Not sure if this is a gentoo patch to vanilla or not.
This might be related: http:// www.skynet. ie/~ivan/ install_ ubuntu_ on_ultra10. html#Running% 20X%20on% 20a%20Creator3D %20card. I will try it out and report back results.
-Chris