Monterey 12.3.1 External Monitor/Display Issue - No Longer Outputting Signal

I did the same: bought a refurbished monitor Delll E228WFP because I thought the same model, working fine since installation of Mac mini m1 2020 but no: same problem. Even with update twelve. four now still the same. FRRRUUUSSSST.

When running Windows on bootcamp (MBP16) there are no external monitor issues ! A software fix for mac os should be doable.

This is getting ridiculous. Problem persisted on Monterrey from the beginning.

"Just works".. Messing around for hours when this happens. Loosing focus AND productivity

Ok same issue - really frustrating.

Father's Mac Mini (M1, 2020) Have had two Apple 30" CInema HD Displays (c2005) running quite happily under Big Sur since he purchased it in 2020. Finally got him to move to Monterey and all went fine until the final reboot - both screens remained black. Over and over again, one monitor, different ports, different adapters did not matter - black. Took to nearby authorized mac repair shop, next day they charged us nothing (thank you!!! West Palm Beach MAC!!!), because they said - " Um, it is fine, the upgrade worked perfectly - and we ran it on 3 different monitors all ports no issues." Working for several days now with Apple tech ....no traction - is it the adapters or what? Displays btw are FINE - hooked each up to MacBook Pro - perfect. ????????

For those who sought and contacted Apple directly, they at least have

comfort ~ in knowing someone at corporate did see their comments,

expressions, and logged that report correctly. (Caps? considered rude.)

Anyone else, is Unlikely to see satisfaction, or get a reply from

Apple officially; in this user-to-user discussion forum format.

The bulk of online Support, with features (such as live chat)

etc; are available in regions where those are supported.

[Link to my above reply, to this 10+ page 'officially unanswered' rant.]

Monterey 12.3.1 External Monitor/Display … - Apple Community

Apple, this issue has persisted since macOS 12.0 was released. What was that? November? I'm getting really, really tired of this nuisance. Please use some of that cash you have from charging 5X as much as Newegg for RAM and hire some people to fix this already.

Is it an Apple USB-C/lightning cable you're using? Is it still working after a restart? I've had my second monitor suddenly receive an image too after changing the refresh rate but after a restart it went back to the "No Signal" message and changing the refresh rate didn't do anything.

I have a 5K 120/240hz display so HDMI is not an option.

Belkin Thunderbolt 3 Dock Core, specified to be Mac compatible. No issues when running windows on bootcamp...

Wondering if this is a Bug or a Feature 🤦

Hi Apple

I have been using 2 LG UltraFine Monitors connected together at my 2018 MacBook Pro but suddenly 2nd monitor receives no signals although both monitors are working fine when I use just 1 monitor. I strongly believe this is Monterey 12.3.1 issue not any other hardwares. I just went to Apple store at Apple Park but employee over there had no solution. Please help for better work environment.

Augustin

I received the adapter and there is no improvement on my monitor. It continues to fade dark where I cannot really see anything then get bright and fade and sometimes black out completely. MacBook Pro 2019 with Lepow portable monitor. Worked perfectly for 2 years until 12.3 update. Still works perfectly on my old laptop running Catalina.

hi there, just wondering if you had any success? I also have a mac air M1 and am upgraded to monterey 12.3.1

I have a mac CINEMA HD external monitor that it has always connected to. At present in displays the only option when it comes to adding a display is the apple TV devices over wifi. It doesn't recognise anything plugged in and I have added the correct USBc adapter. it doesn't let me try to "detect display " at all.

Also frustrated!!!

Monterey: Same **** problems and start to be a serious problem. It compromise our business. It was perfect with BigSure.

device affected: MacBook Air 2019 + M1 with Dell UltraSharp U2722DE 4 k (Docking station on board)

device affected: MacBook Air with BenQ PD2710-T (Docking station on board)

no problem with the Dell P2722HE (that it's not a 4k) used with the same MacBook Air 2019

Thanks. Yes Purchased the correct USB C male to dvi adapter. Works instantly when plugged in to husbands MacBook Pro also on Monterey 12.3.1 with all identical software but not on Mac Air M1 2020 .

I’m not sure if it’s an accessibility issue? Or if the thunderport (4 not 3 type) is different as it is on the pro as there is a slight difference when we checked via the serial number on the Mac tech specs site

This is the exact same system kernel panic, 1-2 seconds frozen, then pink screen flash, and crash that we had to deal with when the M1Pro and M1Max chipset systems launched. It plagued my 16" MBP multiple times PER DAY.

I upgraded earlier today, and within a few hours; the entire system has kernel panic diseased code that was fixed many releases ago; and somehow its back.

APPLE; I want to downgrade the OS back to the previous release IMMEDIATELY; this is so embarrassing for you. What, like two lines of patch notes for 12.3.1, that just crashes the core processes; you brought back the kernel panic issue; like how does this make it out of QA??

Same Issue

The monitor suddenly turns off for a few seconds every 10 minutes or so.

MacBook Pro (13 in, M1, 2020)

Apple M1

8 GB

MacOS Monterey 12.3.1 (21E258)

Samsung monitor:

LU32R591CWRXEN

S/N: CXK1H4ZR100221V

I've benn triying with HDMI 1.4 and 2.0, and DP 1.1 and 1.2, and 30Hz, 25Hz, and 24Hz, but nothing works

Same issues on my end too. How is this not already fixed? It feels like it never will be fixed. Nothing helps. Not reaching out to apple reps since they haven’t been able to fix it, not reporting it as a bug nothing. I expect to read about a class action lawsuit soon. Shame on Apple indeed.