Battery drain in Vista hiberation

[eyecon82]

Originally Posted by yock1960

I came across this thread while searching for possible solutions to my laptop's issue of reseting screen resolution to min. when waking from sleep mode. Anyway, I too have issues with battery drainage in hibernation. In addition, I can verify that the laptop will wake from hibernation for scheduled tasks; I heard it make it's 'happy' chime this morning at around 3AM! There are numerous tasks scheduled to take place in the wee hours of the morning, so; I guess I need to stop storing it in the messenger bag or do some re-scheduling of events. I do normally have it on A/C when I put it in hibernation, I guess I could try and unplug it and then hibernate and see if it still wakes up. I thought that there might be a possibility that the 'critical' bios revision (F.09) that I just flashed last night might address this issue, but this happened afterwards, so it was something else it addressed I suppose. The laptop is an HP, specs in my sig.

that is very odd...i have many tasks scheduled for mid morning, such as avg virus check, defrag, and so on...i have never had any of that happen..

are you sure you're not mistaking the diff b/w sleep and hibernation? if it is in hibernate mode...NOTHING should wake it up..even scheduled tasks

[ScuderiaConchiglia]

Originally Posted by eyecon82

that is very odd...i have many tasks scheduled for mid morning, such as avg virus check, defrag, and so on...i have never had any of that happen..

are you sure you're not mistaking the diff b/w sleep and hibernation? if it is in hibernate mode...NOTHING should wake it up..even scheduled tasks

Apparently there are some machines equipped with a bios that is capable of waking the machine when a timer expires just like some have a "wake on lan"
function built in. Vista is able to recognize such a bios and then the task scheduler will interact with and manipulate that BIOS based timer function. I think this was intended to be for desktop machines but somehow it is apparently affecting laptops as well. Which can be a really bad thing if the laptop is sequestered in a bag at the time it comes on.

Gary

[Nrbelex]

Hate to resurrect an old thread, but I don't see a solution. Did you try putting the computer in hibernation, removing the battery and putting it back in the morning?

~ Brett

[eyecon82]

Originally Posted by Nrbelex

Hate to resurrect an old thread, but I don't see a solution. Did you try putting the computer in hibernation, removing the battery and putting it back in the morning?

~ Brett

it's the wake on lan settings and usb detect settings, you have to turn those off

[Ingvarr]

As for me, unexplained wakeups ceased when I've installed the Vista SP1 beta.
BTW, it was not wake on LAN, or USB, wakeup source in the log was listed as "RTC" (real time clock).

[E.B.E.]

It is not wake on LAN or USB, usually it is the Task Scheduler of Vista using the real time clock to wake up Vista in order to perform some task.

The computer where I had this problem with Vista is long gone to its owner. There were no wakeups there. I simply think that Vista did not cut off power to some devices in hibernation.

[corsairGT]

Originally Posted by E.B.E.

It is not wake on LAN or USB, usually it is the Task Scheduler of Vista using the real time clock to wake up Vista in order to perform some task.

The computer where I had this problem with Vista is long gone to its owner. There were no wakeups there. I simply think that Vista did not cut off power to some devices in hibernation.

I've a Lenovo X61s subnotebook. My battery would drain 15-20% during a hibernation period of 8-10 hours. After Lenovo replaced my motherboard and battery, the battery drain persisted. Lenovo's famous design laboratory Yamato in Tokyo has already confirmed that Vista or more specifically some Vista Updates are causing the battery drain. In another words, if you reinstall the PC back to the day you received it, your battery wouldn't drain. Lenovo is currently working with Microsoft to solve the battery drain issue.

At present, the only viable option to stop the battery drain is 1) unplugged AC before hitting hibernation 2) simply shutdown or 3) after hibernation, unplug and plug the battery back to the PC. I think most users would prefer the 1) option.

Some users in Taiwan claimed that flashing to the latest BIOS would solve the issue; however, I doubt it very much.

[jiwwy-ast]

I'll add my story to that...while on hibernation, some USB ports are still alimented...as my notebook cooler is still bravely attempting to cool my laptop...

it's only one of the 4 usb port i have...

but i guess it explained while my battery always loose some power when i wake the computer up

[E.B.E.]

Lenovo's famous design laboratory Yamato in Tokyo has already confirmed that Vista or more specifically some Vista Updates are causing the battery drain. In another words, if you reinstall the PC back to the day you received it, your battery wouldn't drain. Lenovo is currently working with Microsoft to solve the battery drain issue.

At present, the only viable option to stop the battery drain is 1) unplugged AC before hitting hibernation 2) simply shutdown or 3) after hibernation, unplug and plug the battery back to the PC. I think most users would prefer the 1) option.

Yes, this is along the lines of what I suspected. Perhaps the devices that are being powered during hibernation are the USB ports, as jiwwy-ast says. Or some others. Or both USB and others.

Thanks for posting the solutions!

Just Vista quirks and glitches... they'll take 5 or 6 years to get it right and then they'll release another OS, full of its own fresh bugs

Well, I guess it's better than having the computer waked up during the night.