At this stage, if you have a machine with an in-kernel graphics driver and it fails to suspend or resume then there aren't huge numbers of people reporting the bug. Really. Suspend/resume is part of the certification process for RHEL now and I get all the related bugs. There simply aren't that many, and in general it's something like hibernate failing because someone's swap partition vanished. I really would encourage you to report any suspend/resume issues to bugzilla.kernel.org and the massive probability is that it'll be tracked down quickly.