Sun Blade 100/150 workstation framebuffers won't work properly on 2.6 kernels.
Please apply to gentoo-sources-2.6.15+, we'll keyword ~sparc with some testing afterwards.
Created attachment 76256 [details, diff]
Blade 100/150 fb fix patch
FYI, this is fixed in the vanilla 220.127.116.11 kernel (yet to be folded into genpatches at the time of writing).
It also went into what will become 18.104.22.168 and i prefer the 2.6.15 series since the 2.6.14 series has other issues that aren't so easily patched (bbc_envctrl eats cpu, the alsa driver isn't fixed, v240 doesn't work right and many many others).
Fixed in gentoo-sources-2.6.15-r1