Sleeping iMac

[Seanog]

21.5inch 2010 iMac, OS 10.13.6 I put it to sleep if not used after 5 minutes, but then it won't wake. The only way I can wake it is by pressing the On/Off button. I'm sure in older OS versions you could designate which keys you wanted to wake a computer. Am I missing something?

 

[honestone]

How long have you been having this issue? When it was "working" previously, what did you need to do to wake the machine up?

 

[Seanog]

Bought tis imac second hand but I think I had this problem on the one it replaced. I can't remember. There will be times when it wakes but not often, mostly I must press the On/Off button lightly.

 

[Seanog]

Just wondering, when it goes to sleep the wifi goes down as well. When I wake the computer I must wait for wifi to reconnect. There must be a connection?

 

[Cory Cooper]

Hello,

The Wi-Fi going off when sleeping, then taking a few seconds to reconnect at wake is normal.

Try the following two steps:
-How to reset the System Management Controller (SMC) on your Mac
-Reset NVRAM or PRAM on your Mac

Also, try the following:
-Navigate to  > System Preferences... > Energy Saver
-Uncheck Put hard disks to sleep when possible and Wake for network access

Let us know if that helps,

C

 

[Seanog]

Have already tried the PRAM, no luck but just tried SMC and seems to have solved the problem. Thanks!!
As for "Wake for Network access", I have turned this off as it lights up the room at night time when an email arrives.
Looks like the main problem is solved, thanks again.

 

[Cory Cooper]

No worries.

Let us know if it returns, or if you have other issues.

Be well,

C