Sleeping system refuses to wake up

AmberClad

Diamond Member
Jul 23, 2005
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So here's the situation. I put the system to sleep (using either the Start Menu or by pushing the "Sleep" button on my Microsoft keyboard). All is well and good and the system powers down :moon:. Now when I hit the Sleep button again (or any button) or try waving the mouse around, it doesn't wake up. All I see are the indicator LEDs on the keyboard flashing once. I have to push the power button to bring it out of the sleep mode.

It's not really a big deal, but I guess I was under the impression from reading the ACPI specs a while ago that you could wake a computer out of the S3 state using keyboard/mouse input.

Does this not work with USB input devices?
 

imported_FishTaco

Golden Member
Apr 28, 2004
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Vista 64 wakes from S3 hybrid sleep with my cheap HP multimedia usb keyboard. My Logitech mx510 mouse on usb can also wake up my system.
 

AmberClad

Diamond Member
Jul 23, 2005
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Thanks, for the info.

Gah, I should have known that this would turn out to be one of those obscure features buried in the BIOS. "USB KB Wake-UP from S3", and for whatever reason, it was disabled by default.

Also found a couple of other related options: "Wake-Up On LAN", which is pretty self-explanatory. And "Wake-Up by PCI card" -- I have no idea what this does. Both of those are enabled by default apparently.

Go figure...
 

JackMDS

Elite Member
Super Moderator
Oct 25, 1999
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Wake On LAN is a special Mode and has nithing to do with sleep mode, see here,

http://www.ezlan.net/WOL.html

Wake-UP by PCI, means out of sleep when there is action in a PCI card.

As an example, if you have LAN PCI any Network traffic would take the computer out of Sleep.