Power Management

[Jack]

I think that I have a problem with power management in
Windows XP. I find that my computer will periodically
resume from Sleep Mode by itself.

I will put my computer into sleep mode by going: Start ->
Turn off Computer -> Stand By. It goes into sleep mode
fine. But I'll come back some time later and the computer
is on agian!

I have disabled anything running in the background that
would cause this computer to wake (Scheduled Tasks, E-
mail, Antivirus, etc...) but I still have this problem.

I'm really not sure where to go from here. Does anyone
else have this sort of issue with Windows? Thanks

Jack

 

[Jon]

Could check that your modem is not set to bring it out of standby (or some
other hardware device)

Right-click "My Computer" > Properties > Hardware > Device Manager

Click the plus sign by "Modems" to expand then right-click your modem >
Properties > Power Management > Uncheck "Allow this device to bring the
computer out of standby"

Then check your settings eg for mouse and keyboard and other devices. A
slight move of the mouse can bring it out of standby too.

Jon

 

[Guest]

Rightclick center of screen/Properties/ScreenSaver tab
Click "Power" button near bottom, then set
System Hibernate to "Never"
System Standby to "never"
Click Apply and OK

 

[Jack]

Hello Byte.

Thanks! That actually worked. I have also noticed some
odd behavior.

I took the following steps and found some observations.

- I set System Stand By time to 1 Hour.
- I went Start -> Turn Off Computer -> Stand By
(The computer went in to stand by mode with no
problems)
- I started a stop watch to see how long the computer
would stay in stand by mode

After some time, the computer woke on it's own. I found
that the computer actually woke EXACTLY after 1 Hour (the
same time that I had the "System Stand By" set to).

I repeated this procedure but set the power
management "System Stand By" to 2 hours. I manually put
the computer into stand by and found that the computer
would stay in stand by for EXACTLY 2 hours (again...the
same time that I had "System Stand By" set to).

Similarly, I set "System Stand By" to 'Never'. I manually
put the computer in to stand by. I found that the
computer stayed in stand by mode until I told it to resume
and never woke automatically.

I think that what is happening is this: When the next
power save mode is due, the power management is waking the
computer.

Does your computer do this too? Is there a fix for this?

Thanks,

Jack