The patch from https://bugs.launchpad.net/ubuntu/+source/linux/+bug/550625/comments/492 works for me, now I can disable/enable trackpad using [Fn + F3] on my Dell Vostro 3750 with Ubuntu 11.10
The patch from https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/550625/ comments/ 492 works for me, now I can disable/enable trackpad using [Fn + F3] on my Dell Vostro 3750 with Ubuntu 11.10