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tranceking26

macrumors 65816
Apr 16, 2013
1,375
1,526
Yes for both battery and plugged in I do. I don't really think it's made too much difference though.

Oof I didn't realised this was meant for iMacs and I can't delete this now :confused:
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
Yes for both battery and plugged in I do. I don't really think it's made too much difference though.

Oof I didn't realised this was meant for iMacs and I can't delete this now :confused:
I have it enabled too but also don’t think it makes any difference.. I’ve had it enabled because initially I thought that would solve the reason for my iMac not waking up from sleep at times when the iMac had been asleep for an extended period of time (enabling power nap didn’t solve this by the way and whenever it happens I still need to physically press the power button on the back of the iMac to wake it up from sleep)
 

cltd

macrumors regular
May 22, 2014
137
32
I had to switch power nap off because Macbook had problem with wake up after sleep.
 

Jaber Alasfar

macrumors newbie
Mar 4, 2020
15
1
I have it enabled too but also don’t think it makes any difference.. I’ve had it enabled because initially I thought that would solve the reason for my iMac not waking up from sleep at times when the iMac had been asleep for an extended period of time (enabling power nap didn’t solve this by the way and whenever it happens I still need to physically press the power button on the back of the iMac to wake it up from sleep)
I experienced similar issue after upgrading my rams to 40gb
 

Jaber Alasfar

macrumors newbie
Mar 4, 2020
15
1
Still i have mixed feelings about enabling or disabling power nap in the iMac
One thing makes consider disabling it is the temperature of the iMac
It is hotter than idle temperatures
Idle 30s to 40s
Power nap 40c to 48c
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
I experienced similar issue after upgrading my rams to 40gb
I don’t think it has anything to do with the Ram upgrade, I experienced the issue of my 27 inch iMac not waking up from sleep and requiring a brief press on the power button on the back to wake it up after being asleep for an extended period of time such as a day and a half) which I described in my original post even before I upgraded the RAM on my 2019 iMac to 40GB.
I’m still in Mojave by the way, perhaps the issue was fixed in Catalina? Are you running catalina?
I refuse to update to Catalina because some of my apps that I rely on for work are not supported on catalina
 

Jaber Alasfar

macrumors newbie
Mar 4, 2020
15
1
I don’t think it has anything to do with it, I experienced the issue of the 27 inch iMac not waking up from sleep behavior (after being asleep for an extended period of time such as a day and a half) that I described in my original post even before I upgraded the RAM to 40GB in my 2019 iMac.
I’m still in Mojave by the way, perhaps the issue was fixed in Catalina? Are you running catalina?
I refuse to update to Catalina because some of my apps that I rely on for work are not supported on catalina
yes I use Catalina now and I don't advice to upgrade I would suggest you to wait for macOS Big Sur , my guess is that after I reset bluetooth and SMC and NVRAM I got similar issue..,maybe because the iMac entering real sleep mode without anything preventing it from sleeping ? but in your case it doesn't seem the right thing to press power to wake it up
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
yes I use Catalina now and I don't advice to upgrade I would suggest you to wait for macOS Big Sur , my guess is that after I reset bluetooth and SMC and NVRAM I got similar issue..,maybe because the iMac entering real sleep mode without anything preventing it from sleeping ? but in your case it doesn't seem the right thing to press power to wake it up

I have “prevent iMac from automatically going to sleep” enabled so that’s definitely not the issue either, I put my iMac to sleep manually myself when I need to put it to sleep. I don’t want my iMac to wake up and go to sleep automatically multiple times a day.

I’ve owned this 2019 iMac for close to a year now and I still don’t know why my iMac is unable to wake up from sleep with a click on the mouse or keyboard press after being asleep for a long period of time (usually more than 24 hours), I got used to it though I just press the power button on the back of the iMac and it wakes up right away,

How did you do SMC and NVRAM reset? Did it help?
 

Jaber Alasfar

macrumors newbie
Mar 4, 2020
15
1
I have “prevent iMac from automatically going to sleep” enabled so that’s not it either, I put my iMac to sleep manually only which is why I enabled that setting.

Yeah to this day I don’t know why my iMac is doing that but I got used to it, How did you do SMC and NVRAM reset? Did it help?
To me the most effective way is to reset Bluetooth module it helped in my case
Smc and NVRAM didn't help me for several months
But i did them after resetting Bluetooth

reseting smc is simple just unplug the ac power of the iMac and wait 15 seconds then plug it again and wait 5 seconds after that power up your iMac

nvram
Shutdown your iMac and power it while you Press and hold
Option + command and P , R keys
 
Last edited:

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
To me the most effective way is to reset Bluetooth module it helped in my case
Smc and NVRAM didn't help me for several months
But i did them after resetting Bluetooth

reseting smc is simple just unplug the ac power of the iMac and wait 15 seconds then plug it again and wait 5 seconds after that power up your iMac

nvram
Shutdown your iMac and power it while you Press and hold
Option + command and P , R keys
And how did you reset the Bluetooth module? That fixed the sleep issue for you?
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
It sounds to me like your iMac isn't properly detecting your bluetooth keyboard or mouse/trackpad. Resetting the bluetooth module may fix the problem.

Look here: https://www.macrumors.com/how-to/reset-mac-bluetooth-module/
I want to clarify that my iMac wakes up from sleep just fine with either a mouse click or keyboard button press under normal everyday usage but there are days when I don’t use the Mac at all and it is sitting on my desk sleeping and when I return to it after a day or two of not using it is when the issue comes up and I’m unable to wake it up from sleep using the keyboard or mouse and I’m required to do a quick click on the power button on the back of the iMac and it immediately wakes up from sleep. I thought perhaps PowerNap would fix this issue but it’s the same case with PowerNap enabled or disabled and made no difference

should I try resetting the Bluetooth module? I’ve had this 2019 iMac for close to a year now. I only have one wireless mouse and one wireless magic keyboard so how would I go about performing the re pairing process? Or would I simply connect it with a lightning port and it will re pair the mouse and keyboard?
 

Donnation

Suspended
Nov 2, 2014
1,686
2,083
I want to clarify that my iMac wakes up from sleep just fine with either a mouse click or keyboard button press under normal everyday usage but there are days when I don’t use the Mac at all and it is sitting on my desk sleeping and when I return to it after a day or two of not using it is when the issue comes up and I’m unable to wake it up from sleep using the keyboard or mouse and I’m required to do a quick click on the power button on the back of the iMac and it immediately wakes up from sleep. I thought perhaps PowerNap would fix this issue but it’s the same case with PowerNap enabled or disabled and made no difference

should I try resetting the Bluetooth module? I’ve had this 2019 iMac for close to a year now. I only have one wireless mouse and one wireless magic keyboard so how would I go about performing the re pairing process? Or would I simply connect it with a lightning port and it will re pair the mouse and keyboard?

Yes, I would reset it. And yes if you just plug in the lightning cable it will automatically pair to your iMac. Hope it works for you.
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
Yes, I would reset it. And yes if you just plug in the lightning cable it will automatically pair to your iMac. Hope it works for you.
If that doesn’t fix it what else could it be? Do you think NVRAM has anything to do with it?
SMC Reset I already tried (I re-arranged my apartment several weeks ago and had the iMac unplugged from power for several hours so the SMC was reset that way naturally)
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
Yes, I would reset it. And yes if you just plug in the lightning cable it will automatically pair to your iMac. Hope it works for you.
ive gone ahead and reset the bluetooth module, i will see if it resolves the issue if the sleep wake problem happens again
 

Benz63amg

macrumors 68040
Original poster
Oct 17, 2010
3,974
769
Yes, I would reset it. And yes if you just plug in the lightning cable it will automatically pair to your iMac. Hope it works for you.
So the issue continues to happen even after i reset the bluetooth module, iMac wasn't waking up from sleep with keyboard key press or mouse click today and i had to click the power button on the back of the iMac to wake it up.
 
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