Takes laptop 3 Minutes to go into Hibernation!?

Hey all,

I'm running a HP dv6500t series laptop. All of my drivers are up to date. My Vista machine is running SP1.

I notice that whenever I hibernate my laptop, the screen would go dark immediately, but it would take over 2 minutes for the laptop to turn off.

Anyone have a similar issue? Any tweaks?

Thanks!

 

do you have alot of programs on before you hibernate?

when you hibernate, all the the stuff thats in your RAM gets saved into your HDD. So it will take time..

 

I don't think I have a lot of programs running in the background. It's comparable to my XP machine, but my XP machine hibernates in 20 seconds or less.

Talk about a big different...

 

Three minutes is a long time for any change in power state. I suspect that it has something to do with an uncooperative service or process. You can try this:

From here: http://forum.notebookreview.com/showthread.php?t=166532&highlight=gary

 

That tip is about the shut down process, not hibernation. No processes or services are killed when hibernating.

Gary

 

my U1E also take forever to hibernate
twice times compare to shut down

I blame my slow hard drive for that

 

I've never timed my Vista hibernation but agree that it takes longer than XP.

I suspect that one factor is that Vista uses the full amount of available RAM for either applications or for the superFetch cache, so it writes all of it to the HDD. XP may only be using half of the RAM for applications so it only writes that half to the hibernation file (XP's hibernation time increases when more applications are open).

However, I also suspect that Vista is being unreasonably slow in writing to the disk. Assuming you have 2GB RAM and it takes 2 minutes then that's 1GB minute or about 17MB/s which is 1/2 to 1/3rd of current HDD speeds. It is quite likely that Vista is doing other housekeeping prior to writing to the HDD. Whether it's more diligent in doing that housekeeping than XP is unclear, but this could well be the cause of the problem.

John

 

I'm more familiar with XP's hibernation state where basically it does a copy of 100% of your ram state to the disk. I don't know if Vista copies any readyboost, but suspect it does not and acts the same as XP. So with this said, here's some math for a low end machine:

Computer with 4200rpm disk=20 Megs/sec transfer average (OS installed)
2 Gigs RAM installed=2048 Megs of RAM
2048/20=102.4 seconds
Total time to copy = 1 Min 42 secs.

Other things that could affect your time:

Fragmented disk: my 7200 has a 55 Megs/sec transfer rate, a fragmented hibernation file on my disk transfers at around 5-10 Megs/sec...so imagine a 5400 or 4200...this could up your time significantly

Amount of disk used: again, my disk, 55 Megs/sec is average, 70 MBps at the beginning of the disk to 30 MBps at the end. If your hibernation file is at the end of the disk, it fills slower.

I would use ULTIMATEDEFRAG to target your hiber file and move it close to the start of the disk. You should only have to do this once provided you don't change the amount of RAM or delete your hiber file. There are a few other programs that can do similar, that's probably your best bet.

 

Try clearing out your hibernation cache and start again

 

Vista only has one low-power state (Sleep) compared to XP's two (Hibernate and Standby), but still has different low-power options. In particular, it can either save data to disk, thereby preventing data loss if you run out of power, or it can leave it in memory. The latter option uses a bit of power to keep the memory powered, but results in a much quicker reboot. And so long as you're plugged into an outlet or have lots of battery life left, it's not really a problem - if the power goes out you'll probably realize in time to reboot and do a full shutdown before you run out of battery.

By default it saves everything to disk, but you can configure Vista to use the memory-only Sleep mode from within advanced power management settings. I forget the exact place since it's been four months since I've used Vista, but it's in there somewhere along with options like how long to wait until turning off the hard drives, and it does help a lot in reboot time. It becomes nearly instantaneous.

 

My laptop takes between 2-20 minutes to hibernate depends on what's running really.

 

Really Wow!

I usually get like maybe 20 seconds tops? I dunno.

 

i just tried it for the first time.. 30seconds

 

. XP:35; Vista:50
. what is ur AV? any external devices?

cheers ...

 

Hibernation cache??? There is no such thing. There is a single file (hiberfil.sys) where the entire contents of RAM are copied. It is overwritten each time it is used.

Gary

 

XP only had one low power state, Standby and one "no power" state, hibernation. Hibernation was NOT a low-power state in XP.

Vista has two low power states, Sleep and Hybrid sleep, and one "no power" state hibernation. The difference between Sleep and Hybrid Sleep is that a hibernation file is created prior to entering sleep mode in Hybrid Sleep. In the "non-hybrid" Sleep mode, Vista enters sleep mode immediately.

Gary

 

You can clear it out along with system mem dumps when you use Disk Cleanup

 

No, that does NOT "clear it out", it deletes it. And then hibernation no longer works, until you open an admin command prompt and type "powercfg /hibernate on".

There is no need to do this though. The file is ALWAYS overwritten.

Gary

 

Ohh right.. thought it did. I stand corrected then..

well it wouldnt hurt to try it anyway and re-enabling it again