Level 1

28 points

M1 MacBook Air external display keeps waking up

I have an M1 MacBook Air connected by USB-C to an LG 27UK850-W 4K monitor. The screen has been waking up frequently when the MacBook is asleep. It never exhibited this behavior with my previous computer, a 2018 15" MacBook Pro. Both computers are running macOS 11.0.1.

Basically what will happen is I will put the computer to sleep, and then every ten minutes or so the screen will "wake" but not fully "turn on." So the backlight will come on, but the screen will remain black, and then it will turn itself back off after a minute.

Doesn't seem like something that would be harmful, but it's definitely a bit annoying. If I remember to switch the monitor to a different input, it stops waking by itself and continues to charge the MacBook over USB-C, so that's been my workaround. Just curious whether anyone else was experiencing something similar?

MacBook Air 13″, macOS 11.0

Posted on Nov 24, 2020 8:12 AM

Top-ranking reply

Zain_A

Level 1

4 points

Posted on Jan 7, 2021 2:35 PM

I might have stumbled upon a fix, this might have something to do with a display driver or color profile not loading over usb-c.

I installed LG Calibration Studio and stopped having the issue, this app also seems to load the LG HDR 4K color profile. The calibration studio app can also be uninstalled and the color profile will stay.

I also noticed an improvement in colors and contrast on my monitor. They were a bit washed out previously compared to my MacBook Pro Retina 2014 connected to the same display via thunderbolt to display port cable. The MacBook Pro Retina 2014 loaded the LG HDR 4K color profile automatically.

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108 replies

niels218

Level 1

9 points

Feb 7, 2021 7:52 AM in response to Jeremy K.

It worked perfectly for me it seems.

thanks a lot. That saved me from spending hours in the Apple hotline without any results.

uttam33

Level 1

8 points

Feb 17, 2021 7:52 PM in response to chrisia777

man its really sad, hope the final release will solve this issue.until then, i will not update to 11.3.

Feb 17, 2021 11:32 PM in response to news@

There's no issues with HDMI. We've discussed it before. However, using hub leads to poor experience. My monitor comes with a hub, which can be extended with only one cable.

Feb 17, 2021 11:38 PM in response to uttam33

I probably use hdmi dock. I'm fed up with it..

uttam33

Level 1

8 points

Feb 18, 2021 12:03 AM in response to chrisia777

which HDMI dock you are thinking of?

niels218

Level 1

9 points

Feb 18, 2021 12:31 AM in response to chrisia777

Hi Chrisia,

are you saying that the workaround that you introduce to us here will not work with one of the new betas and MacBooks will keep waking up again?

please say that I got that wrong.

cheers

Feb 18, 2021 3:08 AM in response to niels218

Darkwake in 11.2 can use my previous solution. 11.3 b2 got a new darkwake, and I can't find the trigger.

Feb 19, 2021 7:02 AM in response to uttam33

I'm going to have a try with tb3 cable. I'll update it here later.

uttam33

Level 1

8 points

Feb 19, 2021 7:08 AM in response to chrisia777

doesn't tb3 uses the dp protocol. i dont feel we can see any difference than usb c to dp.

niels218

Level 1

9 points

Feb 19, 2021 9:34 AM in response to uttam33

Is it possible to charge the MacBook that way? Does it provide 4K & 60 Hz?

That’s what i did all that for. I could have gone for a cheaper setup with HDMI.

iCoco

Level 1

119 points

Feb 20, 2021 12:40 AM in response to niels218

@niels218 No, unfortunately not. Charging only happens via the usb-c port.

Feb 20, 2021 8:07 PM in response to uttam33

It's also the DP protocol. I just want to try to see if it's a cable problem. Obviously not...

Feb 27, 2021 8:47 PM in response to Zain_A

where can I find LG Calibration Studio been looking for an hour but can't find anything can you send a link

Feb 27, 2021 8:48 PM in response to Zain_A

I cannot find the download to the LG Calibration Studio can you by any chance send the link

Mar 10, 2021 2:38 PM in response to Jeremy K.

Hi guys, also I'm having the same Problem with M1 MacBook Pro and LG27UL850.

Is there any solution anyone found?

Thanks.

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M1 MacBook Air external display keeps waking up