iMac not sleeping properly

[jialuolu]

It only started happening a couple of weeks ago, it seems, but now whenever I put my iMac to sleep, it wakes up about 5-10 seconds later but the second time I put it to sleep, it'll stay asleep. Same deal even if I have no apps running. Any ideas?

 

[EricNau]

How are you putting it to sleep?

If you're using the keyboard shortcut, and you hold one of the keys too long, it will cause the computer to wake up.

 

[mad jew]

What sort of devices do you have plugged in? Do you have any Bluetooth devices connected? 🙂

 

[Fleetwood Mac]

What's plugged into your iMac?

If my generic external drive is plugged in, for example, it'll only sleep on the second try. Other peripherals cause similar behaviour.

 

[jialuolu]

How are you putting it to sleep?

If you're using the keyboard shortcut, and you hold one of the keys too long, it will cause the computer to wake up.

Nope, usually I just press the power button on the back but the same thing happens if I go through the Apple menu as well.

No devices plugged in except for a USB printer but it's never on 😕

 

[mad jew]

Try resetting the SMC. 🙂

 

[jialuolu]

Try resetting the SMC. 🙂

That fixed it! Thank you! 😀

 

[mad jew]

No worries mate. 🙂