Since the last update (21A5534d), my MacBook doesn't detect my 2nd display. I've tried swapping the display with a new one and trying different connection methods. My MacBook's built-in display goes black for a moment when I attach the cable, but nothing else happens.
I seem to remember that the System Preferences > Displays used to have an option for manually detecting a display, but it doesn't appear to be there any more.
I hope I'm not the only person experiencing this.
I have the exact same issue, but with iMac
I have this issue as well. I have 2 external displays, both LG high-end IPS, high-refresh displays. They were working fine yesterday. Came into my office this morning, and now only my 27" monitor in portrait mode will be detected. Absolutely 0 changes to the configuration from the day before. I've They're both connected to their own dedicated USB-C port on the MacBook Pro. I've tried restarting several times, I've tried resetting SMC and PRAM and the usual swapping cables around with the display that IS detected, nothing works. The monitor still works fine and is detected by my PC without issue. I'm sort of done with Apple at this point. I've had SO MANY issues getting all my devices to consistently work on my 2019 MacBook Pro. I'm just over it, the old adage "it just works" is no longer true with Apple computers which was the whole reason we used them. If I wanted to debug issues every day I'll just use Windows.
same exact issue, cannot detect any secondary display connected through thunderbolt, Monterey is garbage
Same problem since yesterday
Same issue as soon as I updated my 2019 MacBook Pro to Monterey. I have two external monitors, both worked fine till this update now only one seems to register.
Can't find anyway of bringing up the "Detect Displays" hidden option in "Displays" preferences either.
I also have the same issue on an iMac since the update. Has anyone found a solution yet or are apple working on one?
SAME - this is total fascism. I do not want to spend my life serving a technocracy that makes us slaves to it
Same issue just started happening to me. External monitor was working great over usb-c. Did a restart and now it won't find it - tried all three USB ports on my MBP 14", sleeping, restarting, etc.
Additionally the USB dongle that was connected to the monitor via the same USB-C cable to the Mac has stopped working so I don't have my mouse anymore.
I have the exact same issue. I am a photographer and my livelihood depends on my editing which I do on the external monitor. Now suddenly after the update I can no longer use my external monitor. This makes me switch to windows right away. This is purely a case of cheating.
Same issue after Monterey upgrade - connecting external monitor through a hub, doesn't auto detect but laptop screen flashes on and off occasionally. Option key no longer available through display settings - which by the way was always a bit weird that you had to press option to display the gather monitors button. Pretty basic function to be able to connect an external monitor - do they not test this stuff!
Ugh, I just updated my MacBook Pro from 2015. I've never connected a display before, so thought maybe it was a me-problem. What a pain. Was going to buy one of the new ones soon, but yea that's definitely not gonna happen if this is a known problem in the new updates.
I have the same exact issue too. The button for manually detecting an external display in the display settings window doesn’t appear when I hold down the option key. I tried connecting the same HDMI cable and monitor to another MacBook Pro with Monterey and the second display worked. I also tried putting my iMac to sleep and waking it up. I also disconnected and reconnected the HDMI cable while my iMac was powered up. I also reset the NVRAM and PRAM on my iMac, but still no good. I tried entering safe mode on my iMac, still no good. None of the methods suggested on YouTube or online seem to work. Finally, I downgraded to OS X Mavericks and the second monitor did work on my iMac. This proves that it’s not a hardware issue with my iMac and must be a driver issue. Monterey is trash!
I updated my MacBook Pro 2015 model to Monterey last week and the external monitor was working for some days. Today when I disconnected and connected again it stopped recognizing the external display at all. All the tips of making the Detect Display button visible by holding OPT button does not work.
I have tried restarting the Mac, logging out, changing the port, external display detection not working for me anymore. This is a serious failure for my productivity.
Same issues here. After a couple of weeks with Monterey, my 2nd monitor will not work. Everything else on the hub works. Every other port has been tried and the monitor connected directly. Nothing works. And, holding down OPTION to toggle the "detect external monitors" button is also not available since Monterey.
POSSIBLE WORKAROUND is to remove the power cord to the monitor and plug it in again, whilst still connected to the Mac. Standby on/off cycling doesn't work.
I'm new to Mac, having used Windows since 1989! Funny as the only problem I've ever noticed in forums on Mac is how they have problems detecting external displays, so I guess I'm not surprised it's happened.