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IOS 12 iPad goes to sleep when plugged in

I have multiple iPad 9.7's that are used as Zoom Room Video Conferencing Scheduling Displays that need their screens to stay powered on all the time. They are permanently mounted with power cables connected and locked on the Zoom Rooms app using guided access. Of 7 total iPads, 5 were updated to IOS 12 today. After they rebooted all 5 of the IOS 12 iPads will shut their screens down after roughly 15-20 minutes. I have verified in settings under 'Display & brightness' that 'auto-lock' is set to 'never' but the problem still exists. It is consistent across all 5 running IOS 12. Neither of the 2 iPads running IOS 11.4.1 with the exact same app version, guided access and auto-lock settings are experiencing the issue. I've tried relaunching the app, disabling guided access, soft reboots, hard reboots, changing auto-lock settings to 2min, 15min, never, etc with no change. Under 'general' / 'battery' it shows time for 'uptime' but zero minutes for 'sleep' time.


Anyone else experiencing similar issues either in this app or any other on IOS 12?

iPad (6th gen) Wi-Fi, iOS 12, null

Posted on Sep 20, 2018 1:59 PM

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Posted on Dec 12, 2018 3:41 PM

This has now been resolved in 12.1.1

Apple has introduced a feature named “Mirror Display Auto-Lock”. It is accessed via Settings->General->Accessibility->Guided Access->Mirror Display Auto-Lock. Underneath it states, “When this is on, Guided Access will mirror the Auto-Lock setting in Display & Brightness. When off, Guided Access will turn off the screen after 20 minutes of inactivity”.

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Dec 12, 2018 3:41 PM in response to brtnzm

This has now been resolved in 12.1.1

Apple has introduced a feature named “Mirror Display Auto-Lock”. It is accessed via Settings->General->Accessibility->Guided Access->Mirror Display Auto-Lock. Underneath it states, “When this is on, Guided Access will mirror the Auto-Lock setting in Display & Brightness. When off, Guided Access will turn off the screen after 20 minutes of inactivity”.

Oct 11, 2018 7:52 AM in response to brtnzm

I did not find a fix for this issue. However, I have not tested 12.0.1 either.


My workaround was to downgrade my affected iPads to 11.4.1 before apple stopped signing that IOS version. All my scheduling displays are now staying powered on at 11.4.1.


Since you can no longer downgrade from 12.x the only option is for them to fix the issue in a subsequent release.


12.1 is due out this month. Hopefully the issue will be fixed.

Oct 11, 2018 8:32 AM in response to brtnzm

We have a moderate number of iPad Pro 12.9 inch mounted, powered, and running Kiosk Pro Lite. I unfortunately upgraded around 9 of them to iOS 12.0.1 last night before realizing your exact predicament.

After some testing if appears its an issue with Guided Access. If have a friend whose beta testing iOS 12.1 public beta 3 and filed feedback about this issue.

Another test:

In safari, you can visit a website, hit share, scroll to the left, Add to Home Screen, and then you can launch the website without navigation or URL. In settings With Display & Brightness -> Auto-Lock to never. With the webpage opened and guided access enabled even this will turn off the display after 20+ minutes. The display does not turn off if you don't enable guided access. So its not just your application affected.


I have some iPad Air 2 running EventBoard I updated to iOS 12.0.1 last night and those don't seem to be affected by this guided access issue. So Guided access can be enabled on these and the application remains on the display without activity.

Oct 16, 2018 11:37 AM in response to brtnzm

I have been experiencing the same exact thing. Which has been very frustrating as these are our Lobby Sign - In iPads. However, a small workaround I found is that even being in Guided Access, unplugging the ipad from power seems to work for now. I know this is not sustainable of course, because it runs on battery. I hope Apple gets this fixed quickly.

Oct 25, 2018 5:06 PM in response to brtnzm

I have tested on 12.0 through 12.1 beta 5 and this is still an issue. This is a critical bug as any company distributing kiosk type applications usually use Guided Access to lock the phone down and would need the screen to stay on.


We have hundreds of devices now affected in the field with no work around other than unlocking GA - which is terrible in a public kiosk scenario!


I have noticed that turning on airplane mode prevents this from happening which is interesting but not a valid workaround/solution in our case. I really hope 12.1 fixes this issue before coming out of beta.


Anyone else found any other workarounds?

Dec 2, 2018 12:16 PM in response to brtnzm

Same for me. I'm an IT tech working for a school that has 120 IPads tied to Merkai/VPP. I've recently started refreshing them with IOS 12.01. The 30 I did last week via Apple configurator all now go to sleep. Because of this the WiFi drops off and the connection to the Meraki portal is lost. Therefore I cant roll out apps because they all show as offline until manually woken up. The other other 90 IPads still on IOS 11 are fine. Please help! Thanks Mick

Nov 21, 2018 5:57 AM in response to brtnzm

Greetings. OP here. I wanted to check in with an update. I had submitted a support ticket for this issue with Zoom (software we are running on our scheduling displays & controller iPads) back in September. Randomly I got an email update on it yesterday that the 'engineers resolved your issue'. To test, I updated a newly purchased iPad to 12.1, plugged it into power, launched the zoom rooms app in scheduling display mode and enabled guided access. It was powered on all afternoon yesterday without going to sleep so it seems the problem has been resolved for my specific situation. My zoom ticket mentioned their engineers reported a guided access bug to apple.


I'm curious if:

a) anyone else running zoom can confirm it's also working for them?

b) anyone running guided access without zoom can confirm it's also working for them?


Happy Thanksgiving everyone.

Nov 21, 2018 11:16 PM in response to doubleham

"[Update October 25, 2018 — We have only heard from Apple that this is a ‘Priority 1’ issue and they are investigating. We continue to monitor the Apple Developer Downloads site for the latest iOS betas to see if a fix has been posted."

Source: https://flowkiosk.com/guided-access-bug-in-ios-12-fixed/


It is comforting that it is priority 1 but still not solved 😟

IOS 12 iPad goes to sleep when plugged in

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