Just built and installed the 1.5beta kernel on my ThinkPad 310E. Still the same problem (PR<something>): When I try to adjust contrast using Fn + Fkey, the system freezes. The same happens if I close the lid. I have no idea of how to debug this. Under 1.4.x, this all works just fine. Under 1.5, same freezes with or without APM support in kernel. Sigh. -jm