i tried a few more kernels from mainline ppa and found out that up to 2.6.35.3-maverick (2.6.35-02063503-generic) the system boots up. 2.6.35.4-maverick (2.6.35-02063504-generic) and more recent kernels won't boot. in the changelog were some drm/intel specific commits, maybe those have sth to do with the problem.
i tried a few more kernels from mainline ppa and found out that up to 2.6.35.3-maverick (2.6.35- 02063503- generic) the system boots up. 2.6.35.4-maverick (2.6.35- 02063504- generic) and more recent kernels won't boot. in the changelog were some drm/intel specific commits, maybe those have sth to do with the problem.