how to debug / report kernel-2.6.35rc regression

[Mark Zhitomirski]

Hi!

My problem occurs on Dell Latitude D400 notebook
with 2.6.34 kernel I can press "Power/Sleep" button and goes down OK.
with 2.6.35rc2 kernel nothing visible happens.

Where can I look (which logs?) to debug this issue or what should I attach to bug report?

Thanks,
    MZ