FWIW, I had also seen this behaviour on 12.10 on my Asus F201E, but not as often (usually after a day or two it would stop suspending). I upgraded to 13.04 and so far it's happened every time (only just rebooted into 13.04), as Alex described. My log is a bit different, attaching in full.
** Attachment added: "pm-suspend.log" https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1157435/+attachment/3591514/+files/pm-suspend.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1157435 Title: Unable to enter suspend/hibernation in Ubuntu 13.04 on an Asus X201E [F201E] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1157435/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs