Vista's goofy hibernation-spontaneously re-hibernates

[mgo]

I have seen this on two different ThinkPads. When I come out of Hibernation and don't do something with the machine right away (like move the mouse or open an application) the machine will return to hibernate on its own.

This annoys me because I like to come out of Hibernation and then walk away and do something else while the machine comes back up. But...unlike XP, if I am not there to do something within a few seconds the danged thing re-hibernates? Anybody else seen this quirky trait?

[rkawakami]

This does happen to me (hibernate after wake-up with no action performed) on my T23 with Windows XP SP2. I assume it's tied to some system timer since it takes about two minutes to re-hibernate; I've never timed it exactly. Since it only takes my system about 30 seconds to fully restore, it's rare that I'll power it up and walk away. I've only played around with one Vista-running TP but have not seen this occur yet. I'll give it a try and report back.

[K0LO]

Both XP and Vista behave this way by design. If there is no user activity detected after resuming from hibernation, the machine will go back into hibernation. I believe the decision to do this derives from power-management considerations. Consider a laptop that someone accidentally has enabled a scheduled task to wake the machine. If the laptop is stuffed into a backpack and comes out of hibernation to do something then you really do want it to go back into hibernation quickly instead of risking overheating in your backpack.

I believe the user-activity timer was shortened in Vista. The timer is 2 minutes with Vista and I believe it was 4 or 5 minutes with XP.

[mgo]

Both XP and Vista behave this way by design. If there is no user activity detected after resuming from hibernation, the machine will go back into hibernation. <snip>I believe the user-activity timer was shortened in Vista. The timer is 2 minutes with Vista and I believe it was 4 or 5 minutes with XP.

Many thanks for the information. With both my machines the return to Hibernation happens within -seconds- not a couple of minutes. Is there a way of hacking the timeout, say in the registry or some "secret" place in power management?

I'm sure with Vista's newly set up power management features, there are going to be some buglets that will need to be worked out...

[K0LO]

I am not aware of any way to control the timeout interval but perhaps somebody else is. However, there is definitely something wrong with your machines. They should stay up for 2 minutes before timing out. If they time out in a few seconds then you need to start looking for the reason.

Here is a reference article from Microsoft about this topic. It makes mention of the fact that the BIOS is responsible for clearing wakeup signals, so that might be a place to start looking. Are there any BIOS updates available for your machine? Have you checked all of the settings in the Power Profiles, for both AC and battery profiles?

[noetus]

I also have the thing re-hibernating within some seconds, not two minutes. It's very aggravating. Also for some reason the screen switches off immediately so that I have to mouse or pen some input to get it back on.

[K0LO]

noetus and mgo:

By chance are you running the Lenovo power manager? If so and if you are willing to try try a test, uninstall Lenovo's power manager and let Vista handle the power management. See if the hibernation problem persists.

[mgo]

noetus and mgo:

By chance are you running the Lenovo power manager? If so and if you are willing to try try a test, uninstall Lenovo's power manager and let Vista handle the power management. See if the hibernation problem persists.

Yes, I am running Lenovo Power Manager, mainly because I like the battery maintenance section. Interestingly, my too-rapid hibernate seems to have gone away. I think that may be due to my installing of Vista SP1. If it doesn't, I may stop the Power Manager service, rather than uninstall and see what happens. Thanks for the tip.