I've had the same issue as LiKwiiD. I installed the psmouse-alps-dkms and couldn't get it to work. sudo rmmod psmouse and sudo modprobe psmouse hung the system. On reboot the mouse wasn't detected. After purging the package, but the touchpad is still not usable, it's not appearing at all in 'xinput list' now.
Computer : Dell E5410 Natty 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:02:55 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/550625 Title: Alps touchpad is recognized but synaptics clients and scrolling do not work To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/550625/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp