No drivers nevessary for this. Apple just doesn't really support external monitors.
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Some Users Having External Display Connection Issues With macOS Big Sur 11.1 and 11.2
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I have an LG 32UL950-W. I've commented elsewhere on this, but, in brief, on a non-M1 MacBook Pro, I had a much more useful and broad array of resolution options. On the M1, the display has far fewer.
For my purposes, I was using 3360x1890 on the non-M1. With the M1, the closest without going to maximum resolution is 3008x1692.
It's not an enormous difference, obviously. But it makes a meaningful difference in usable real estate.
In terms of other miscellaneous issues, the display doesn't always wake, as needed. The wrong DisplayPort setting on the monitor causes chaos in macOS. And so on.
I've submitted a bug report, which I've been updating with each test of each new beta. So far, no improvement. As others have pointed out, I'm holding out hope for the Ultrawide bug fix, which they've acknowledged, in the hope it applies to all displays, rather than just Ultrawides.
For my purposes, I was using 3360x1890 on the non-M1. With the M1, the closest without going to maximum resolution is 3008x1692.
It's not an enormous difference, obviously. But it makes a meaningful difference in usable real estate.
In terms of other miscellaneous issues, the display doesn't always wake, as needed. The wrong DisplayPort setting on the monitor causes chaos in macOS. And so on.
I've submitted a bug report, which I've been updating with each test of each new beta. So far, no improvement. As others have pointed out, I'm holding out hope for the Ultrawide bug fix, which they've acknowledged, in the hope it applies to all displays, rather than just Ultrawides.
It's not just M1 Macs. My 2016 MBP now will no longer charge since the update. It maintains the battery at 85% as long as I keep it plugged in, but it never charges. It also will not charge my iPhone or iPad now. External drives still work. Same on the Boot Camp side.
Well crap.
I literally just got my Caldigit TS3+ RMA'd for this. My Samsung G7 recognizes that there's something connected initially, but the M1 MBP never recognizes that there's a monitor to output to.
I literally just got my Caldigit TS3+ RMA'd for this. My Samsung G7 recognizes that there's something connected initially, but the M1 MBP never recognizes that there's a monitor to output to.
I have an M1 MBA connected to a Samsung UR55 28" 4K monitor. I was having regular issues with my monitor not wanting to connect after I'd wake my MBA up. Sometimes it would connect and sometimes I'd have to mess with the input settings for it to connect. Thankfully 11.2 fixed this for me and now my monitor connects @ 60Hz every time I wake my MBA up.
Now if only Apple could fix my stupid random Safari crashes....
Now if only Apple could fix my stupid random Safari crashes....
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Some macOS Big Sur users who are running the 11.1 and recently released 11.2 update have been experiencing ongoing issues with external displays, based on multiple reports on the MacRumors forum, Apple Support Communities, Twitter, and Reddit.
There are at least two separate issues at play, but both are related to external display connections. The problems appear to have started with the macOS Big Sur 11.1 update, and the 11.2 update has not provided a fix and in some cases, has worsened the issue.
The first issue causes USB-C ports to fail to recognize external monitors, rendering external displays unusable and unable to connect. This appears to be affecting both DisplayPort and HDMI displays connected directly and through hubs and adapters.
We saw this issue firsthand after upgrading a MacBook Pro to macOS Big Sur 11.2, with the update preventing an external monitor from connecting with USB-C, and there are several other complaints from affected users. From Reddit:The second issue results in resolution issues with external displays unable to work at a full 4K 60Hz resolution, instead locked at 30Hz. In some cases, a 4K monitor is only recognized as a 1080p monitor.
It appears that many of those affected with display issues have a 16-inch MacBook Pro, but there are also reports of other Macs with the same connectivity problems. There does not appear to be a reliable, widespread and tested fix or workaround at this time.
Mac users did not experience these problems in the initial release of macOS Big Sur 11.0.1, and it appears that the macOS Big Sur 11.3 update released yesterday also does not address the problem, but there is still some time for Apple to work in a fix before the 11.3 software sees a public release.
Article Link: Some Users Having External Display Connection Issues With macOS Big Sur 11.1 and 11.2
I'm having issues with 11.3 as well. I'm using an M1 MacBook Air. My second screen goes black a few times a day. Sometimes it also drops into "color snow" with cracking coming from the speaker. To resolve, I turn the monitor off/on, and or unplug the USB-C port and replug. Drives me nuts as I can't tell if its a bad ports in the new laptop, the monitor is going zany or the MacOS is funky.
The butterfly keyboard was even worse...at least the touch bar doesn't hinder any functionality to the device. The butterfly keyboard did...
My temporary work around is:
Unplug the display, restart the computer and enable “prevent computer from sleeping automatically when the display is off” in system preferences>battery>power adapter.
My MacBook Air M1 will not remain connected to an external display.
On waking from display sleep it will not resume sending a signal to the external display.
When the external display is unplugged and plugged in again it will not either.
I can get it to work by shutting down and restarting the machine but that’s only good as long as it doesn’t sleep or is disconnected.
Unplug the display, restart the computer and enable “prevent computer from sleeping automatically when the display is off” in system preferences>battery>power adapter.
My MacBook Air M1 will not remain connected to an external display.
On waking from display sleep it will not resume sending a signal to the external display.
When the external display is unplugged and plugged in again it will not either.
I can get it to work by shutting down and restarting the machine but that’s only good as long as it doesn’t sleep or is disconnected.
So far so good with my 2018 Mini and a 49" Dell Ultrawide via USB-C. the 5120x1440 native resolution still works.
Running into the same issue with a Mac mini 2018 model...prior to 11.1, I have run 3 monitors on it for around 15 months, but now when the computer is turned off or goes to sleep the monitor plugged into the HDMI port will not function. I finally gave up and run just the two monitors now, but even then, one of them requires me to unplug & reconnect it before the Mac mini will detect it. Any advice on this is highly appreciated.
I have a MBP 2019 model with Intel chip and the thunderbolt connection to the monitor is flaky in the sense it often doesn't recognise it as high resolution so I have to reboot things. *cough*
I'm running a M1 Mac Mini - after updating to 11.2 today, both thunderbolt ports don't power anything, this includes the ultra-fine 5k display, as well as my CalDigit dock. They work just fine when plugged into my 2017 MacBook Pro (non M1 obviously.) Not sure what's going on…
Using my Mac mini M1 I've had no issues whatsoever with my LG 32UD99 display with either OS 11.1 or OS 11.2. In other words, I was lucky in picking this display. There wasn't much information available on displays for M1 devices when I got this M1 Mini. I found exactly one source that recommended it. Luckily, it was enough.
I did though find that when using HDMI the display didn't have the greatest blacks. But with the supplied USB-C cable the display looks as good to me as my Retina display iMac had before I sold it. P.S. My other loose-in-the-box USB-C connectors would't work at all with this display.
I did though find that when using HDMI the display didn't have the greatest blacks. But with the supplied USB-C cable the display looks as good to me as my Retina display iMac had before I sold it. P.S. My other loose-in-the-box USB-C connectors would't work at all with this display.
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When I updated my IMP, the external monitor was extremely flaky, 'tearing' and not stable at all. It would sometimes flash off, and come back on. I called Apple Support, and they were stumped (I'll bet), but they wanted me to try a few things, and one was disconnecting everything, and resetting the PRAM, and SMC, and then rebooting, shutting down, and then connecting everything and rebooting again. I was unconvinced it would do anything, but tried it. They also told me to hold the PR keys until it bonged a few times. *shrug* But as it came up, the monitor was fine, and it has been rock solid since. It was a 'hub' hooked up through USB-C, and the monitor is on the HDMI port from the hub. The only thing they could say was that *something* didn't load right, and the hub wasn't totally recognized for some reason.
I'm putting this out here because it was really odd that a hub would cause a flake out like that, and then be fixed by 'fluffing the pillows'. Sometimes fluffing works? At least in this case it did. Who knows what Big Sur didn't get right.
EDIT: Oh, the 11.2 update seemed fine. No problems, so this might not be helpful, but it can't hurt...
I'm putting this out here because it was really odd that a hub would cause a flake out like that, and then be fixed by 'fluffing the pillows'. Sometimes fluffing works? At least in this case it did. Who knows what Big Sur didn't get right.
EDIT: Oh, the 11.2 update seemed fine. No problems, so this might not be helpful, but it can't hurt...
HDMI issue of Mac mini M1: If the Apple Cinema HD 23-inch Display is connected to Mac mini using Apple HDMI to DVI Adapter, the picture is ghosting and flickering, totally unusable. (The 11.2 update even worsened the situation - on 11.1 the picture was ghosting and on 11.2 the picture is ghosting and flickering.)
I had to stop using Apple's HDMI adapters as they *were* very flaky. Sometimes they will drop out on hours, and sometimes in minutes. Occasionally the monitor would come back quickly, and other times it was just gone. I tried a third party adapter and it was rock solid, but then I realized I was using the newer MBP for Zwift, and that's just nuts. The slower system had a native HDMI port, and it's fine. Bug Sur 11.2 was taken fine by both. Sad that Apple's own adapters are so bad for some reason.
Definitely saw many problems with my external display after upgrading to Big Sur 11.1.
With 11.1, macOS had problems determining the resolution and refresh rate of my USB-C connected external BenQ EX2780Q to my 16" MacBook Pro. Usually booted into a lower resolution and/or 60Hz refresh rate rather than 144Hz. Switching the monitor off was a big no-no, as it'd lose the resolution or refresh rate again when switched back on.
With 11.2, it boots up to the right resolution and refresh rate so far. I have found, however, that if the monitor is switched off and the Mac then goes into sleep mode, switching the monitor back on and waking up the Mac can cause it to drop the resolution down - but then switching the monitor off and on again fixes it. But this doesn't happen all the time. So there appears to be some improvement (at least for me), but not by much.
With 11.1, macOS had problems determining the resolution and refresh rate of my USB-C connected external BenQ EX2780Q to my 16" MacBook Pro. Usually booted into a lower resolution and/or 60Hz refresh rate rather than 144Hz. Switching the monitor off was a big no-no, as it'd lose the resolution or refresh rate again when switched back on.
With 11.2, it boots up to the right resolution and refresh rate so far. I have found, however, that if the monitor is switched off and the Mac then goes into sleep mode, switching the monitor back on and waking up the Mac can cause it to drop the resolution down - but then switching the monitor off and on again fixes it. But this doesn't happen all the time. So there appears to be some improvement (at least for me), but not by much.
Same thing is happening to me too. It is "better" but still ran into the resolution dropping down after waking it from over night sleep.