c2k15: krw@ on softraid on 4k disks, cardbus on Dell vs Synaptics and Thinkpads

Kenneth Westerback (krw@) just came back from c2k15 and filed his report:

I arrived with two goals: offload a problematic Dell L400 I had had donated to me, and get 4K softraid working. deraadt@ and beck@ immediately pointed out that I was banging my head on the wrong brick wall for the L400 problems.