I screwed up. In apps audit I accidentally clicked on an extension taking it out of starting up on boot (I don't know which one). When I rebooted, X wouldn't start so I think it was important. To try and fix it, I thought I remebered someone mentioning that if you empty onboot.lst, all extensions would load on boot - but it seemed to do the opposite. Then I emptied /tce/tce.lst - no cigar.
What can I do to load all extensions on boot again?