Hi, I've been testing Gutsy on my MacBook (Core Duo) since before the beta release, and I recently ran into issues with suspend with a recent kernel update. While suspend/resume worked fine for me from early Tribe releases up to and including the 2.6.22-12 kernel, with the 2.6.22-13 kernel I have begun experiencing random difficulty resuming from suspend-to-RAM. Basically, I can suspend fine, and most of the time I can resume fine, but about one out of every 4 or 5 resume attempts is unsuccessful - i.e. the video never POSTs and the system is unresponsive despite the fans running. I have reported this on launchpad (bug #151016). Furthermore, a user has reported a similar problem in bug #127101 which may be related to this. I was initially unsure of the cause of this - at first I suspected X - but now that I have a working preliminary fix to my X-server's random crashing problem (bug #127101, for anyone who is interested in random X-server crashes), it is evident that the problem was in fact introduced by the 2.6.22-13 kernel and persists with -14. Anyway, I did look at the changelog for 2.6.22-13, and came across this change which may have some relevance here... * clockevents: remove the suspend/resume workaround^Wthinko Also, there is some other ACPI-related changes in there and a sync with the upstream kernel - any which could have introduced the bug. Has anybody seen this bug, or have any idea as to what specifically introduced it? Is there any additional information I can provide to help resolve this? I apologize if this list isn't the best place to bring this up, though it is the one central kernel-related contact I could find. I hope this can get resolved before the release - either by a reversion of some patches or a fix... Tim