Comment 42 for bug 226279

I'm having this problem too, and the behavior on my machine looks EXACTLY like a problem I had when testing Hardy Beta (only works after unplugging the power cable and plugging it again, like some reported). Suspend stopped working after a change called "tsc prevent time going backwards" (introduced in kernel 2.6.24-15.27), and it was fixed when this change was reverted, in the subsequent kernel (2.6.24-16.30). The link for the bug is here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/213723

Is there any possibility that this modification was included again by mistake?