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Level 1

23 points

External Display USB-c Monitor issue

I have a MacBook Air M1 (base model) and a LG 27QN880-B 27” QHD connected via USB-c. I keep my MacBook Air open because I use it as a Secondary screen and the LG (primary).

The issue (2) is that when I wake up the MacBook Air from sleep the monitor doesn't turn on. I have to unplug and plug again the USBc to turn on (sometimes I have to do it multiple times). Second issue, the performance seems to be a bit choppy and sometimes laggy (cursor seems to skip sometimes) with the external display connected.

This used to not happen before (MacBook Pro Intel Mid-2018), I would imagine with the M1, things would run smoother... but it's otherwise.. worries me a bit...

To let you know, I used "time machine" and restored my MacBook Air from the MacBook Pro content would this also cause issues as I'm seeing?

Thank you All!

MacBook Air 13″, macOS 11.0

Posted on Nov 22, 2020 6:43 AM

Best reply

sfilimonov

Level 1

30 points

Posted on Nov 22, 2020 7:09 AM

I think my issue is connected to this https://discussions.apple.com/thread/252078295

It might feel choppy because Big Sur forces your external display to run in 30hz instead of 60hz. I've had betas of Big Sur with my MBP16 and LG27UL550 and all worked normally. This is SOOOO frustrating! It feels like your computer for $2000 started to work 2 times slower.

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133 replies

Feb 16, 2021 5:04 AM in response to Alancito

I think you totally missed the point

Feb 20, 2021 8:13 AM in response to sfilimonov

Huh, so what you're saying is that if I do a fresh install, and go through the pain of setting up again as new?

What about restoring settings from iCloud?

This is mental!

alan7467

Level 1

4 points

Feb 20, 2021 8:18 AM in response to sfilimonov

How long has it been since you did the separate install? I’ve had a few days here in there where most of my problems go away. Then it comes right back.

Feb 21, 2021 9:31 AM in response to sfilimonov

Dont be so excited. Mine was working with no issues for a couple of days and now it started again, even with 11.2.1

Feb 22, 2021 11:32 AM in response to Alejo_argentina

What kind of issues do you have specifically?

Feb 22, 2021 1:24 PM in response to Alejo_argentina

Did you already call to Apple Support about this? To let them try to help and to raise awareness of this issue.

Mar 8, 2021 7:12 AM in response to snoop088

Btw it's a good idea to contact display manufacturers for them to pressure Apple as well.

Mar 8, 2021 7:55 AM in response to snoop088

how about the fact that time machine hasn't backed up apple mail in what 5 years?

Mar 9, 2021 8:01 AM in response to jefffffffff

Just updated to 11.2.3... the issue is still here

Mar 9, 2021 8:27 AM in response to Kimochero

Here ya go: https://www.theverge.com/2021/1/21/22242107/linux-apple-m1-mac-port-corellium-ubuntu-details

Apr 26, 2021 2:46 PM in response to KekoaTHJ

Has anyone tried MacOS 11.3? is this issue solved?

alan7467

Level 1

4 points

Apr 26, 2021 3:08 PM in response to Alejo_argentina

I just got done installing 11.3 on my M1 MBP. Thus far all of my issues appear to have been resolved. Fingers crossed that it stays this way!

yvanrrrr

Level 1

8 points

May 9, 2021 4:52 AM in response to Alancito

Thanks I've completed the form. As my Mac is from 2015 they will certainly consider it an "edge case". Cheers.

External Display USB-c Monitor issue