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Reminders app waking mac from sleep

I've been having 2 issues with my mac staying asleep, this post is about one of them, which is regarding reminders waking from sleep, turning the display on, and not going back to sleep:


iMac (Retina 5K, 27-inch, 2017). Mac OS 10.15. Have two external USB hard drives hooked up at all times.


In Energy Saver, power nap is off, wake for network access is off. In Notifications, Do Not Disturb has the following 3 checked: "When the display is sleeping, when the screen is locked, when mirroring to TVs".


I set up a test reminder, see the `inDelta=137` below.


Abridged log using `pmset -g log` (full log in attached file):

2019-10-12 14:26:25 -0700 Notification        	Display is turned off
2019-10-12 14:26:25 -0700 Assertions          	PID 582(useractivityd) Summary PreventUserIdleSystemSleep "BTLEAdvertisement" 00:00:02  id:0x0x10000a3af [System: PrevIdle DeclUser BGTask IntPrevDisp kDisp]
...
2019-10-12 14:26:25 -0700 Assertions          	PID 119(powerd) Summary InternalPreventDisplaySleep "com.apple.powermanagement.delayDisplayOff" 00:00:58  id:0x0x1000008003 [System: PrevIdle DeclUser BGTask IntPrevDisp kDisp]
2019-10-12 14:26:25 -0700 Assertions          	Kernel Idle sleep preventers: -None-
2019-10-12 14:26:25 -0700 Assertions          	[System: PrevIdle DeclUser BGTask IntPrevDisp kDisp]
2019-10-12 14:26:25 -0700 Assertions          	PID 119(powerd) Created InternalPreventSleep "com.apple.powermanagement.darkwakelinger" 00:00:00  id:0x0xd0000a3b1 [System: PrevIdle DeclUser BGTask SRPrevSleep IntPrevDisp kCPU kDisp]
2019-10-12 14:26:25 -0700 Assertions          	PID 584(sharingd) Released PreventUserIdleSystemSleep "Handoff" 00:02:38  id:0x0x10000a381 [System: PrevIdle DeclUser BGTask SRPrevSleep IntPrevDisp kCPU kDisp]
2019-10-12 14:26:40 -0700 Assertions          	PID 119(powerd) TimedOut InternalPreventSleep "com.apple.powermanagement.darkwakelinger" 00:00:15  id:0x0xd0000a3b1 [System: DeclUser BGTask SRPrevSleep IntPrevDisp kCPU kDisp]
2019-10-12 14:26:40 -0700 Sleep               	Entering Sleep state due to 'Software Sleep pid=205': Using AC (Charge:0%) 150 secs
2019-10-12 14:26:43 -0700 Wake Requests       	[proc=dasd request=Maintenance inDelta=43536] [*proc=powerd request=UserWake inDelta=137 info="com.apple.alarm.user-visible,481"]
...
2019-10-12 14:29:01 -0700 Notification        	Display is turned on


iMac Line (2012 and Later)

Posted on Oct 12, 2019 3:15 PM

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Posted on Sep 22, 2020 3:30 AM

I have the very same problem as so many others here.


What did work for me, setting an immutable flag to `/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist`:


$ sudo pmset sched cancelall
$ sudo chflags schg /Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist

$ /bin/ls -lO com.apple.AutoWake.plist


This prevents the system from updating the file and my MacBook no longer wakes to reminder events. Needles to mention that it prevents all scheduled system events like sleep, power-on and such.


I recommend removing the flag before a system update:


$ sudo chflags noschg /Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist


Hope this helps at least some of you!



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90 replies

Apr 8, 2020 11:43 AM in response to jackjctaylor

Well. When I set a reminder I expect it the reminder otherwise what is the goal to have a reminder.


May be the bug was on previous release that won’t remind you something because the Mac was asleep.


I mean you expect an alarm clock to wake up you, don’t you ?


now I would likely agree that it depends of each one requirement, I think it make sense to have a reminder be ‘vocal’ thus attempt to remind me something in all situation, you don’t think so.


Both are acceptable. As a developer you need to choose one or t other.


BTW have you or not set a reminder at this time ?


Apr 8, 2020 12:05 PM in response to stéphane66

I think it's a hideous idea that a Mac would wake up for reminders. It destroys the whole concept of being asleep. When a Mac is put to sleep it should NEVER wake up (unless you set it to 'wake for network access'). That's what sleep means. If you want to sit there by your Mac and have it remind you, don't have it asleep. Just use a screensaver or turn the monitor off. Sleep should mean sleep. What is the point of waking up for every reminder when you're not there. As I said, if there are occasions when you want it to remind you, DON'T PUT IT TO SLEEP. In any case an iOS device or Watch will always remind you.


Besides, as has been pointed out, the Mac has NEVER previously done this which with all the bugs Apple seem to be incapable of eliminating prior to MacOS releases does rather indicate this is just another Catalina bug.


If you consider this normal and correct behaviour, what are doing here.

Apr 19, 2020 1:11 AM in response to jackjctaylor

Well it's either a bug, or it's intentional and Apple have decided this is a good thing.


Hopefully it's the former as that stands a (small) chance of being fixed, whereas the latter would mean way less interest in changing it, despite it being utterly stupid and nonsensical behaviour.


Either way, I suggest all who have noticed they are suffering from this (I suspect that in fact Catalina is doing it for everyone, just some people have not noticed), let Apple know it needs fixing/changing. Either through feedback, bug reports if you have that facility and/or generally haranguing their support lines.

Apr 19, 2020 3:18 AM in response to UKenGB

I’m increasingly of the opinion this is how it’s meant to behave. It should be an option if you ask me, or at least more clearly explained.


I have stopped using timed reminders for anything which doesn’t really need it. Daily reminders with no time schedule now happen at the default time from settings, which doesn’t wake everything up.


I’m afraid I’ve changed the way I use Reminders to make this behaviour work for me. TBH I actually prefer it now, my phone dings and beeps at me enough without reminding me about emptying the bins too!!

Apr 19, 2020 3:46 AM in response to dieselfish

I strongly believe this is a bug, I can’t see any reason why Apple would want a Mac to wake up out of a sleep state for an active reminder. It also only has this behaviour on my iMac, not on my MacBook Pro or Mac Mini despite them running exactly the same version of Catalina.


Either way, I agree - I’m simply going to have to change the way I use reminders on my iMac either by constantly shutting it down every time I finish using it or by disabling reminders on there all together

Apr 19, 2020 10:35 AM in response to jackjctaylor

Ah so your Mini works correctly and doesn't do this? Are you sure? It is my Mini that is causing this and my MacBook Pro does too, but the lid is usually down when sleeping so I had never noticed. However when I checked, it was waking up. I also had a friend check his Mini and sure enough, any Reminder woke his Mac at that time.


If there are some Macs on which Catalina does not do that, apart from not being able to understand how that can be, I'd say it proves beyond doubt that it is a bug.

May 1, 2020 4:41 AM in response to FUNK1196

"Me too"!


Macbook Pro Early 2015 with Mac OSX 10.15.4 installed, connected with Ethernet, power and external screen.


Every morning I see light coming from my office room as Macbook is already awake due to reminders.

I tried everything that has been suggested in this thread, nothing helped.


When I put my Macbook to sleep, I want it to sleep, not to wake up in the middle of the night.


From my point of view, this is a bug and should be fixed.

If this has been added by Apple intentionally, they should at least give user a checkbox within the settings to decide, which wake up behaviour they prefer!

May 7, 2020 3:37 AM in response to FUNK1196

Just to update everyone, in an attempt to solve this issue I've asked Apple to completely wipe my iCloud reminders. I've been using Reminder for years and must have 10,000+ completed reminders on my account and roughly 200 active ones. I'm wondering whether it is this that is the source of my issues. To get to the bottom of it, I've asked them to wipe my account so I can start fresh and see if that solves the issue as it didn't escape my mind that these issues may have been caused by the upgrade in Reminders in Q3 of 2019. I'll keep you updated...


May 7, 2020 10:49 AM in response to jackjctaylor

Well done for following this up. However, worth bearing in mind that accessing the same iCloud account from 2 different Macs, one Mojave and the other Catalina, produces 100% consistent results. Catalina always causes this problem (actually on more than one Mac) and Mojave NEVER causes the problem.


So whatever the reasons behind it, the problem is with Catalina.

May 8, 2020 12:35 AM in response to jfdeegan

Are you sure you have seen this exact issue in MacOS(X) prior to Catalina? Over the years I have extensively used ALL versions of Apple's OS, since well before OSX even, on multiple Macs and since the introduction of Reminders, I have NEVER had a Reminder wake up the Mac - until Catalina. Lately, the exact same Macs have the problem in Catalina but did NOT with earlier versions of MacOS. I have also never heard of anyone else suffering from this pre Catalina either.


If true, it rather puts the problem into a different light as it then seems less likely to be a bug, more an unwanted and unreliable design feature.


I guess we need to establish if others have the same problem pre Catalina, or if, like me, the same Macs that worked correctly (NOT waking for Reminders) only started exhibiting this behaviour after the installation of Catalina.

May 8, 2020 12:45 AM in response to UKenGB

I can’t comment on the behaviour before Catalina but the timelines certainly point to this occurring post the upgrade. One thing I will say is I’m only receiving this behaviour on one of my Macs (An iMac), my MacBook Pro and Mac Mini (both also on Catalina) do not experience this behaviour.


With that said, I have been experiencing huge issues with reminders syncing across my devices since the Reminder overhaul in September 2019 - so I’m also not ruling it out as being a ‘Reminder’ issue, not simply Catalina

Reminders app waking mac from sleep

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