Why does my Vista wake up randomly?

Maschine · 2007-04-14, 11:50

Hi,

some days ago I installed Vista (Business) on the HTPC (XP had big troubles hibernating the PC, maybe a bad driver, and I got the Vista licence for free). Now hibernating works good, no more crashes during hibernation, but now the PC randomly wakes up.

Sometimes it's just 1 minute after MP hibernated the machine, sometimes 10 minutes and sometimes 1 hour or more. I can see no reason in the logs, neiter in the MP logs, nor in the system event logs.

I chose the most energy-saving option from Vistas new energy options

I didn't change any hardware or BIOS settings compared to the XP install.

I'm running out of ideas here, please help my HTPC to get his nightly sleep back

Thanks,
Maschine

Roberdin · 2007-04-14, 13:19

I suspect that you have, but have you tried enabling extended logging in the power management plug-in?

samuel337 · 2007-04-15, 05:30

lol, I've been having the exact same problem on my XP machine the last few weeks. Ended up having to disable all startup apps, and re-enable them one by one. There was also a patch available for fixing XP's inability to hibernate when you have more than 1GB of RAM. It sleeps fine now, but I have no idea what kept it up.

Anyway, you're on Vista so that doesn't really apply. But if there's nothing in MP's logs, I suggest you try disabling startup apps and then re-enabling them gradually because it may not be an MP problem.

I dug into the Windows API and couldn't find something that tells you *what* woke it up. I found stuff that could tell you when it was set to wake up, but not what. Vista may have changed that, but I don't think so.

Sam

Maschine · 2007-04-15, 12:49

Thanks for your answers! I have enabled extensive logging in MP, but I really don't think it's a MP problem. I tried also to hibernate with Vista's hibernation fuctions and MP not running - same problem.

Not beeing able to find out "what" woke up the PC is the hardest part I think. As Sam pointed out, one can see when the machine woke up, but not which process caused it :/

I read on some forums that Vista has some administrative services like defrag or indexing enabled by default to wake up the PC. Pretty stupid IMHO

But unfortunately I didn't find a setting yet to disable that...

Well seems I have to live with that

Maschine

samuel337 · 2007-04-16, 03:37

I think you would find those services either in Scheduled Tasks, or under the Services bit in Administrative Tools. Not sure, as I haven't had time to load Vista yet.

I would try disabling startup items first, because they're easier to disable.

Sam

2007-04-14, 11:50	#1 (permalink)
Maschine Portal Developer Join Date: Jun 2004 Location: Germany Posts: 517 Thanks: 13 Thanked 5 Times in 5 Posts Country:	Why does my Vista wake up randomly? Hi, some days ago I installed Vista (Business) on the HTPC (XP had big troubles hibernating the PC, maybe a bad driver, and I got the Vista licence for free). Now hibernating works good, no more crashes during hibernation, but now the PC randomly wakes up. Sometimes it's just 1 minute after MP hibernated the machine, sometimes 10 minutes and sometimes 1 hour or more. I can see no reason in the logs, neiter in the MP logs, nor in the system event logs. I chose the most energy-saving option from Vistas new energy options I didn't change any hardware or BIOS settings compared to the XP install. I'm running out of ideas here, please help my HTPC to get his nightly sleep back Thanks, Maschine

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2007-04-14, 13:19	#2 (permalink)
Roberdin Portal Member Join Date: Dec 2005 Location: London, United Kingdom Posts: 102 Thanks: 0 Thanked 0 Times in 0 Posts	I suspect that you have, but have you tried enabling extended logging in the power management plug-in?

2007-04-15, 05:30	#3 (permalink)
samuel337 Portal Member Join Date: Aug 2004 Location: Melbourne, Australia Posts: 773 Thanks: 0 Thanked 0 Times in 0 Posts	lol, I've been having the exact same problem on my XP machine the last few weeks. Ended up having to disable all startup apps, and re-enable them one by one. There was also a patch available for fixing XP's inability to hibernate when you have more than 1GB of RAM. It sleeps fine now, but I have no idea what kept it up. Anyway, you're on Vista so that doesn't really apply. But if there's nothing in MP's logs, I suggest you try disabling startup apps and then re-enabling them gradually because it may not be an MP problem. I dug into the Windows API and couldn't find something that tells you what woke it up. I found stuff that could tell you when it was set to wake up, but not what. Vista may have changed that, but I don't think so. Sam

2007-04-15, 12:49	#4 (permalink)
Maschine Portal Developer Join Date: Jun 2004 Location: Germany Posts: 517 Thanks: 13 Thanked 5 Times in 5 Posts Country:	Thanks for your answers! I have enabled extensive logging in MP, but I really don't think it's a MP problem. I tried also to hibernate with Vista's hibernation fuctions and MP not running - same problem. Not beeing able to find out "what" woke up the PC is the hardest part I think. As Sam pointed out, one can see when the machine woke up, but not which process caused it :/ I read on some forums that Vista has some administrative services like defrag or indexing enabled by default to wake up the PC. Pretty stupid IMHO But unfortunately I didn't find a setting yet to disable that... Well seems I have to live with that Maschine

2007-04-16, 03:37	#5 (permalink)
samuel337 Portal Member Join Date: Aug 2004 Location: Melbourne, Australia Posts: 773 Thanks: 0 Thanked 0 Times in 0 Posts	I think you would find those services either in Scheduled Tasks, or under the Services bit in Administrative Tools. Not sure, as I haven't had time to load Vista yet. I would try disabling startup items first, because they're easier to disable. Sam