If your monitor wakes up (almost) immediately after sleep
You may face this problem when you send your monitor to sleep. A few seconds or minutes later the monitor wakes up by itself, without any input from keyboard or mouse. In this and the next page I will let you know and try several methods to get rid of the wake problem. Please note that more causes may exist not covered here.
As for myself, since the monitor kept waking up forced by certain applications such as Firefox, instead of closing these applications each and every time I wanted my monitor to sleep, I decided to just use this small freeware called Super Sleep, that locks a monitor in sleep mode, so that no application or system setting is able to wake it up. You can use Super Sleep yourself, or keep reading.
Try first to locate possible applications that wake up your monitor, check all startup locations (even in the registry) for programs that may perform automatically tasks, etc. — but even before this, just close main applications you may have running, such as your browser or word processor, torrent clients and peer 2 peer applications, and then put your monitor to sleep, because the problem may come from such programs.
In my case Firefox is one of these offending applications. Not wanting to believe it, I disabled all Firefox addons, even disabled auto-update and crash reports — still Firefox interrupted my monitor’s sweet dreams. I need to have Firefox always open, and since the same problem is caused by other applications too, I skipped the ‘solution’ of closing my programs before activating power save mode, by letting Super Sleep keep my monitor in deep dreams safely, no matter what programs or Desktop Gadgets I have constantly working.
If Firefox or other browser or any other application is not your problem, perhaps you’ll have to remove the keyboard wake up ability, keeping only the mouse as a device that would wake your PC up. In case your keyboard is not the problem, you should do the opposite, disable the mouse power up options and keep the keyboard enabled.
If keyboard or mouse did not cause the wake problem, check your “Power options” in the Control Panel, select the plan that you use (e.g. the Balanced power plan) and then click -> Change the plan settings -> Change advanced power plan settings. From the next dialog “Power options” expand the branch “Sleep”, then expand “Allow wake timers,” and choose Disable.
You may also need to open the Device Manager and disable Windows’ ability to wake on input from your Network adapter. Go also to the “Advanced” section of your Network adapter and turn to “disabled” these options: “Shutdown Wake-On-Lan”, “Wake on Magic Packet” and “Wake on pattern match.”
Check also your BIOS power settings, e.g. if there is enabled a Wake on Display Activity function (usually in Asus cards), in which case the monitor itself is waking the computer up. You may need also to check the CMOS battery, when all other solutions fail. If the battery is weak is known to cause such problems.
Of course, you don’t have to mess even with the jumper settings of your motherboard, if you can get this Super Sleep freeware to protect the sleep of your monitor.
