broken vesafb on 2.4.21-rc3

I have compiled in vesafb. My Radeon 9700 is running on lastest ATI drivers in X. Everything is ok , till I enter X and then exit. After exiting console is totally messed up. There is no chance to even read a single character.Kernel is patched with nforce2 agp support Everything was ok on 2.4.21-rc2-ac3 which I also patched with nforce2 agp.

Asus A7N8X-deluxe on nforce2
Radeon 9700

Sorry for such poor describe of bug but I'm new to linux:(

Gutko