Wake Timers - How can i see what is set to wake my computer?
I understand the concept of a wake timer, and i know how to enable/disable them - But how can I see what exactly is set to wake my PC? Or not quite so helpful, but a potential workaround:how can I see which program has woken my computer? I dont think anyone can argue that a PC being able to perform the mundane resource intensive Thanks.
September 1st, 2009 2:05pm

Mike - Click the Start Orb, type CMD. Right-click on the CMD.EXE at the top of the results and select Run as Administrator. From there, type powercfg -DEVICEQUERY wake_armedThis will tell you what devices are plugged in/built in that will wake the system.I don't think there's any way of telling what already woke the system up. You can also use the PowerCFG to disable individual devices from waking your system. See Powercfg -? | MORE for more details.
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September 1st, 2009 4:54pm

If you follow the other suggestion to get to a command prompt and typepowercfg -waketimer, you will get list of all active wake timers. Alternatively, powercfg -lastwake will show (logically) what last woke your computer, but it is really only of value if you run it immediately after the machine woke up. I have also found that typing powercfg -devicequery wake-from-any yields a more inclusive result than wake_armed - I have always gotten the sense that wake_armed is less accurate than it should be with Windows 7. Typing powercfg -energy will generate (essentially) a system health report for power efficiency. Of course if you are running the RC and something is waking the system, that is a known problem, mostly due to driver issues. Since I am running the RTM, I can say that (at least for my machine) that has beensatisfactorilyresolved - haven't had an issue since installing the RTM and my laptop's power usage has becomedramaticallymoreefficient. BTW, I really don't have a clue as to what "I dont think anyone can argue that a PC being able to perform the mundane resource intensive" is supposed to mean. I think there are a couple words missing from that sentence. Stephen
September 1st, 2009 5:20pm

Hi MikeCompton, Actually, the correct command should be powercfg waketimers. When inputting the command, the active wake timers will be listed. As you know, if you have enable wake timers, the computer can be waked up by the scheduled applications. Thus, you can go to Task Schedule to check the schedules. You will find the exact applications there. Cecilia Zhou
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September 3rd, 2009 5:21am

Please I would like to know how to enable the wake timers settings using powercfg command
August 3rd, 2012 8:36am

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