How to avoid mouse movement from waking a sleeping display?

[xinelo]

Hi,

My iMac's display wakes up a few seconds after it goes to sleep, due to the USB mouse movement. Even if I don't touch it myself, it's so sensitive that the only way to prevent this is unplugging it. The same thing happens with the Bluetooth mouse, but obviously not with a laptop's trackpad.

How can I prevent that? I would like to tell the computer that the display should only wake up when a key in the keyboard is pressed or when I click a button of the mouse, but not when it moves.

Thanks a lot for your suggestions.
Cheers, Manuel

 

[Sawday]

I have the opposite problem. Moving my magic mouse does not wake up my iMac - but i wish it would.

 

[cradom]

I had the same problem on my wife's imac. For some reason it thought the Magicmouse was still connected when it was turned off. (She uses a Logitech mouse)
I just removed the Magicmouse from Bluetooth prefs and all is fine now.