Kernel panic crash with 2 external LG displays - Monterey 12.0.1 MacBook Pro (16-inch, 2019)

I have a similar issue as well. Same MB Pro year/size. I have 3 external monitors plus the retina on the laptop. I can run the 2 Dell monitors plus the retina but if I add in my LG 27UD58 as the 4th monitor everything freezes.

I have exact same problem, after upgrading to Monterrey 12.0.1, connecting two monitors causes MacBook to freeze and forceful restart is required.

The same as above, i've got the windowserver timeout crash in a few minutes, each time after i connect the second external monitor. No matter what cables or ports are used.

I am also having this same problem. Is anyone using OnScreen App from LG? I found this app was causing kernel panic. I start the Mac, start the OnScreen, get my monitors working, then shut off OnScreen app. Is anyone else doing this? BTW - there is a new version of OnScreen Control available today - 5.23. I am waiting to see if it causes a crash.

Similar computer (w/ 8GB graphics) and problem but I'm using two Dell P2415Q connected via an Anker PowerExpand Elite 13-in-1 Thunderbolt 3 Dock with one display on HDMI and one using thunderbolt-to-DP. I can run the external displays without the Retina display and I can run the Retina with either of the external displays but as soon as I add a third display, regardless of whether i'm adding a 2nd external display to the Retina to the external displays, WindowServer freezes.

I have a similar issue, on 12.0.1 - laptop is closed and connected to two external monitors (Thunderbolt and an ASUS monitor. Not using onscreen.

Using 1 monitor + the laptop display seems to be working fine though. This was never an issue on previous OS versions.

I have the same issue here. My config is below: MacBook Pro (16-inch, 2019) 2.6 GHz 6-Core Intel Core i7 6 GB 2667 MHz DDR4 AMD Radeon Pro 5300M 4 GB Intel UHD Graphics 630 1536 MB Every day I have "unexpected" crashes 3-6 times daily, after I install the new macOS Monterey. It was running great on BigSur I am running two monitors plus a retina. Just spoke with Apple, and opened a case, and they did some troubleshooting which was pressing "options+command+p+r" and the PC restarts two times and that was it. I sent them my crash report, and they did not take a look at it at all to see if what is the issue. I am sending to "Apple" support every crash, but no fix so far. This is so far for the last month. It is so annoying to reopen, re-login to every app, and lose data too. They said it happens again to reinstall the OS. It happened again after 30 minutes I hung with Apple support, and I do not think it will be resolved with reinstalling the MacOS. C'mon Apple, do something!!!

Same here with three external monitors, MacBook Pro 16" intel, 3 external LG monitors + Retina, crashes after a while. When using two external monitors + retina it seems fine. I guess Big Sur it is until this gets fixed!

Similar problem. After upgrading to Monterey started experiencing freezes and strange visual artifacts on some open windows... Can't exactly replicate, but it happens very frequently (so much so that is it is not feasible to use the second external monitor), and it seems to happen more when connecting the second external monitor.

I have a Dell and an LG monitor. Macbook Pro (16-inch, 2019). The issue happens with both monitors connected through USB-C - HDMI cables, connected directly or through a hub.

Similar problem.

After upgrading my Macbook Pro (16-inch, 2019) to Monterey I started experiencing freezes and strange visual artifacts on some open windows... Can't exactly replicate, but it happens very frequently (so much so that is it is not feasible to use the second external monitor), and it seems to happen more when connecting the second external monitor.

I have a Dell and an LG monitor. The issue happens with both monitors connected through USB-C - HDMI cables, connected directly or through a hub, when using the Macbook in clamshell mode.

I have been successful in maintaining a stable setup running by making sure that the computer boots with the two monitor cables plugged in before hand. I also disabled the sleep option in the power configurations just to make sure, but I think the key is just to have the monitors plugged in on boot...

Hope this helps. Also hoping to see an update/fix from Apple.

I have been experiencing the same issue. Identical MB specs but my external monitors are Asus VP28U. Doesn't matter which hub or dock is used or if they are connected directly. Also played around with ports - left and right - same result. This has only happened since the upgrade to Monterey.

Exactly the same issue has anyone had any resolution for this?

Exact same issue. Retina and one external monitor is fine. Retina and two external monitors causes my MBP to hang and the only thing that will bring it back is a hard reboot. This was not an issue with the last OS, just Monterey. Come on Apple, test before you release! This is a joke.

Same.

12.0.1 MacBook Pro (16-inch, 2019) AMD Radeon Pro 5500M 8 GB

Frequent crashes immediately after Monterrey upgrade. Seems to only crash when using two monitors connected via USB to HDMI hubs/cables. My home two-monitor setup with two usb-c monitors hasn't crashed yet.

FWIW, 12.1 does not fix this bug.