M1 Mac Mini Won't Wake Connected Displays, Some Owners Complain

Some customers who have purchased an M1 Mac mini have been experiencing an issue that causes the machine not to wake a connected third-party display from sleep.

m1 mac mini vignette
This is not an issue that's affecting all ‌M1‌ ‌Mac mini‌ owners, but there are numerous complaints on the MacRumors forums and the Apple Support Communities dating back to November when the ‌Mac mini‌ was first released. MacRumors reader gooimac explains:

My M1 (8gb/256) Mac mini doesn't seem to want to wake my displays after its been sleeping. I have tried with 2 different displays with 2 different HDMI cables with the same thing occurring on each one. I am currently only using one at a time. I also noticed some pink squares/graphics glitches on the Big Sur boot/log in screen (with the coloured background, not the black and white boot up)

MacRumors reader Mike, who emailed us about the issue, has seen the same problems.

I have a new Mac Mini M1 with 16 GB of RAM running Big Sur 11.2.3 and every time the computer and screen go to sleep, the computer will not be able to wake the screen up.

Actually, I get "No Signal" displayed on the screen after the Mini wakes so technically the computer wakes the monitor but it fails to send a video signal. The screen is a 34" LG Ultrawide 4K Thunderbolt. It wakes fine with my 2018 MacBook Pro so there's nothing wrong with the display itself.

The only way I can get the Mini to send a signal to the display is to unplug and replug in the Thunderbolt cable. Sometimes repeatedly. Obviously, this is not an ideal solution.

This issue appears to be affecting a wide range of displays that connect over Thunderbolt, HDMI, and DisplayPort adapters, but there are also plenty of people who are having no issues at all.

It's not clear what the problem is, but Apple has been looking into one ‌M1‌ ‌Mac mini‌ display issue that causes strange pink squares to appear on displays connected to one of the machines.

Apple is aware of the issue, and there could be a fix in the works that's coming in a future update. One solution for now may be to disable the feature that puts the ‌Mac mini‌ to sleep, but that's not ideal. The other solution is to unplug and replug in a display that's not responding after a ‌Mac mini‌ wakes from sleep, but that too is an inelegant solution. There appears to be no other fix available at this time.

Related Roundup: Mac mini
Buyer's Guide: Mac Mini (Neutral)
Related Forum: Mac mini

Top Rated Comments

brdeveloper Avatar
8 months ago
The same happens with my 2018 Mini with Catalina. It's not a M1-only issue!
Score: 41 Votes (Like | Disagree)
anshuvorty Avatar
8 months ago
This isn't just a M1 Mac Mini issue, this also affects the M1 MBA, which I have. I have to disconnect my Thunderbolt dock connection and reconnect it and then the display works perfectly again.
Score: 18 Votes (Like | Disagree)
CC77 Avatar
8 months ago
If it doesn't wake a third party display, and Apple no longer produces any first-party consumer displays (I'm not counting a $5K Pro Display XDR as "consumer") doesn't that mean....it doesn't wake any displays?
Score: 15 Votes (Like | Disagree)
djc6 Avatar
8 months ago
I've had this problem for years with my 2018 mac mini, on anything connected to the HDMI port. Both the 2018 and M1 mac mini use the same MegaChips MCDP2920A4 DisplayPort 1.4 to HDMI 2.0 converter chip inside.
Score: 15 Votes (Like | Disagree)
!!! Avatar
8 months ago

My Intel based Mini, just today, would not show video on the TV hooked to the HDMI port. The TV kept saying 'No Connection'.

I had to hold the power button in to shut it down, then hit it again, and then I finally got video. Weird...
My 2018 Mini does this all the time, if I'm gone for 15-30 mins it won't reconnect to the display after I wake it. That's why I no longer turn the display off unless I'll be gone for more than an hour. Thanks Apple.
Score: 11 Votes (Like | Disagree)
PinkyMacGodess Avatar
8 months ago

The same happens with my 2018 Mini with Catalina. It's not a M1-only issue!
Mine too this afternoon. It's done it a couple times in the past month that I've had it. I've never had issues with earlier Minis I've had. I wonder if it's Big Sur?
Score: 7 Votes (Like | Disagree)

Related Stories

m2 feature

Apple Silicon M2 Chip Coming to Wave of New Macs

Monday May 24, 2021 2:27 am PDT by
Apple's more powerful "M2" chip is set to come to a wave of new Macs, bringing significant performance and efficiency improvements to a range of new models, according to recent reports. Bloomberg's Mark Gurman previously said that Apple is working on higher-end Apple silicon chips that are expected to "significantly outpace" the performance of the latest Macs that still contain Intel chips,...
13 inch macbook pro m1

14-Inch and 16-Inch MacBook Pro Models With XDR Displays Expected to Launch Later This Year

Wednesday April 21, 2021 7:08 am PDT by
Apple yesterday unveiled a new 12.9-inch iPad Pro with a Liquid Retina XDR display that uses mini-LED backlighting to achieve up to 1,000 nits of full-screen brightness and up to 1,600 nits of peak brightness. With over 10,000 mini‑LEDs grouped into more than 2,500 local dimming zones, the display also has an impressive 1,000,000:1 contrast ratio. Apple has so far branded its mini-LED...
maxresdefault

Luna Display's Mac-to-Mac Display Feature Now Works Over Ethernet and Thunderbolt

Wednesday May 5, 2021 1:14 pm PDT by
Astropad's Luna Display accessory that's able to turn an old iPad or Mac into a secondary display for a primary Mac was today updated with a new feature that's designed to allow Mac-to-Mac mode to work over Ethernet and Thunderbolt. The Luna Display is an alternative to Apple's Sidecar, allowing an iPad to be used as a display for a Mac. Unlike Sidecar, it works with other Macs, so you can...
Top Stories 61 Feature

Top Stories: New MacBook Pro at WWDC?, iOS 14.6 Released, AirPods Rumors

Saturday May 29, 2021 6:00 am PDT by
WWDC is quickly approaching, and that means rumors are starting to ramp up including the possibility that we might see the long-rumored MacBook Pro redesign at the keynote. This week also saw rumors about future updates to the AirPods and AirPods Pro, as well as a redesigned Mac mini. In other news, Apple has released iOS 14.6 with new features like Apple Card Family and podcast...
displaylink manager macos

DisplayLink Manager Updated With Native Support for M1 Macs and More

Monday February 15, 2021 10:01 am PST by
Over the weekend, the DisplayLink Manager app was updated with native support for Macs with the M1 chip, additional Retina resolutions for 4K displays, and a fix for an issue where screen tearing may occur in some high-load cases. DisplayLink Manager provides a convenient way to enable your DisplayLink dock, adapter, or monitor on macOS. The app combines DisplayLink's latest driver with...
macos monterey

Here Are All the Macs Compatible With macOS Monterey

Monday June 7, 2021 12:17 pm PDT by
macOS Monterey is compatible with many of the Macs that were able to run macOS Big Sur, but it drops support for some older MacBook Air and iMac models from 2013 and 2014. A full compatibility list is below: iMac - Late 2015 and later iMac Pro - 2017 and later MacBook Air - Early 2015 and later MacBook Pro - Early 2015 and later Mac Pro - Late 2013 and later Mac mini -...
night shift

BYU Study Suggests Night Shift Mode Doesn't Help iPhone Users Sleep

Wednesday May 5, 2021 3:50 am PDT by
A new study looking at the effects of low-light functions on smartphone users' sleeping habits suggests that features like Apple's Night Shift mode don't actually improve sleep at all. Introduced in iOS 9, Night Shift is designed to cut down on the amount of blue light that an iOS device puts out during the evening hours. The feature uses the clock and geolocation of an iPhone or iPad to...
m1 mac mini screen

Deals: Amazon Slashes M1 Mac Mini to New Low Prices, Starting at $599.99 for 256GB ($99 Off)

Friday May 21, 2021 10:52 am PDT by
Amazon today is offering the 2020 M1 Mac mini in both 256GB and 512GB storage options for new lowest-ever prices. Both of these sales will be seen at the checkout screen on Amazon, after an automatic coupon is applied to your order. Note: MacRumors is an affiliate partner with Amazon. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site...
Apple new mac mini silver 11102020

Apple Unveils New Mac Mini Powered By M1 Chip, Pricing Now Starts at $699

Tuesday November 10, 2020 10:32 am PST by
Apple today introduced a new Mac mini, one of three new Macs powered by the company's new custom M1 chip with integrated graphics. Thanks to the introduction of the M1 chip, the Mac mini's 8-core CPU provides faster performance than the previous generation. Specifically, Apple says that the M1-powered Mac mini is able to compile code in Xcode up to three times faster, play a...
lunadisplaymactomac2

MacRumors Giveaway: Win a Luna Display Adapter to Turn Your iPad or Mac Into an Extra Screen

Friday April 2, 2021 11:16 am PDT by
For this week's giveaway, we've teamed up with Astropad to offer MacRumors readers a chance to win a Luna Display adapter that's able to transform an extra Mac or iPad into a secondary display for your primary Mac. Priced at $80, the Luna Display adapter is a small dongle that plugs into your Mac using a USB-C port (on newer Macs) or a Mini DisplayPort and when used in combination with the...