Dual Monitor Setup crashing Monterey

start with the link below, and press through the 'read this article' recommendations, and insist you have a Hardware issue. Call the first responders at Apple and work with them for a while. They will follow a script, akin to "are you sure it is plugged in?" work with them, then Politely Insist that they escalate your issue to a specialist (Remember that have no respect for these forums, but will use stuff posted here if needed).

Get Support

so is this fair:

System had been trouble-free for more than a year. The software update caused kernel panics. Swapping stuff around and changing settings and fiddling with everything did not seem to completely resolve the problem, until Changing to different adapters got it working, without changing the software or settings.

If that seems right, what is different/distinctive between new and old adapters?

the smk seems light on details about exactly what HDMI version it supports (4K but at what refresh rate?)

the amazon states 4K @ 60Hz, which is a later edition of HDMI, version 2.0.

But why should that crash the Mac? (rhetorical)

I have the same setup as DanielOdievichSnowflake but I have a Cable Matters usb-c multi-port hub instead and am having the exact same issues. Crashes on wake every time. Had no issues with BigSur so I'm guessing there was a power management change in Monterey that seems to be causing it now

Can YOU post one or more of your panic reports? That may give more clues.

The ones posted already did not have any obvious 'smoking guns".

what is different about the display that DOES cause the problem? resolution? refresh rate? interface? both cables certified, tested high speed rated cables?

I am having exactly the same issue as givindb. Have tried removing all display apps like Magnet etc and ensuring that nothing set to start at login. But when connected to dual monitors macbook pro 16" crashes on wakeup . When not connected to monitors no issue.

That's the thing, I wish I knew!

The monitors are identical.

Bought at the same time. SNs are at most few numbers off.

Firmware on them the same.

I am using them in the native 4K rez and with same zoom factor (~200%? I think). I am running them at 60hz, their max rate

The monitors are connected by https://www.monoprice.com/product?p_id=2529 at 15' length, bought at the same time.

I went a bit long on the cables since they have to go from the machine under the desk through one hole then up and over through another two holes for each monitor. I probably could have gotten away with 10' but oh well.

The only thing I haven't tried is swapping the cables between the monitors, due to aforementioned pain in the behind with routing them under my desk. I could be persuaded to do it through

I want to stress that this all worked from day one of this machine on this corporate macbook using the OS that was one before Big Sur, then on Big Sur, and is now reliably broken. Seems honestly like a driver issue.

Happy to provide dumps, even remote debugging. What I don't want to do is invest into different cables which is what my IT suggests, stretching out there.

Yes, retesting confirms. Any single monitor using either dock using either cable == ok. Both external monitors no matter which cable and dock combo == kaput.

This kinda wrecks the workplace situation here with these fancy shiny monitors.

How can I get you the right things (memory dumps, profiler traces, whatever) to fix it?

Hmmm. My interpretation of what failed is different.

A known-good system worked just fine in one configuration for > 1 year.

After OS upgrade, known-good configuration became no good due to to some portion of this configuration (cables? refresh rate?) not being liked. Why? Don't know. Seems software related.

Fixing it required quite a bit of hassle and replacement of what was good cabling to get back to work.

Seems like a bad OS experience but I am glad I figured it out

I have a 2019 MBP with 64GB and have never seen the beach ball of death or complete freezes before Monterey. As mentioned, the problem appears at EVERY Zoom Desktop or Google Meet call in the browser and also YouTube videos. It gets worse with two external monitors attached but happens less often with the MacBook solo.

It also sometimes freezes when typing in forms, just like I'm doing now and uploading files in Slack, but not that often as in the video calls.

I will wait a few weeks before going back to Big Sur because it's been a hassle since I'm fully remote now.

Anxious to see what your advice is here. My dual monitor 4K is also crashing with Monterey. USB-C plugged in directly to the 2019 MacBook Pro. One external monitor equals no crash.

Hi GovinDB, I'm having exactly the same issue you mentioned here. Just wondering which adaptor you bought to workaround this problem? any link? Thanks in advance