I've had more or less working suspend & hibernate on this Z60m for some time now, and before that on an X31. Both machines have suffered some problems from kernel bugs or (more rarely but often longer lasting) userspace trouble. In fact the X31's trouble was dominated by a faulty lid switch (poor design by IBM) which took to declaring that the lib had been opened while the laptop was in fact closed and supposedly asleep, waking the machine while inside bags or being carried about and creating a fire hazard. This bug, at least, can't be laid at the door of any Free Software developers. The most serious bug in the last six months was losing ACLs on my audio devices after a restore. This was found to be a race condition in userspace software and fixed, but not without months of annoyance. But always it comes back to this: Suspending, especially to RAM, is merely a convenience. So it has to be /really/ reliable to be worth having. A lot of the time, my laptops weren't in the state where I could claim that, but it has definitely been getting better. Oh, and to address the initial statistic offered, it occurs to me that a lot of people might be just one or two drivers from working suspend. So the effort to get from say 10% of attendees having working suspend to 90% may actually just be concentrated in one or two key places. The nVidia drivers, of all sorts, seem to be notoriously twitchy about suspending.
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