I've been having this same problem occur with Feisty, from herd 4 thru today's daily build (20070401) I'm running Kubuntu AMD_64. laptop-detect returns true. on herd-5,the last one I installed, dpkg --reconfigure xserver-xorg did correctly detect both the touchpad and the monitor, giving me the proper resolution.
** Attachment added: "casper.log from 20070401 Kubuntu livecd" http://librarian.launchpad.net/7099875/casper.log -- Synaptics touchpad detection (regression) https://launchpad.net/bugs/40503 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs