I have a 2 display setup. I move some Safari windows to one screen. After waking up from sleep, all windows are on one screen and the second is empty. This is on an M1 mini.
New Mac Studio (currently 12.3.1), with 2 Dell P2715Q screens, both attached with USB-C -> mDP cables. Had a session with Apple Support, they ran through every debugging thing they could think of, no fix. Apple Support said it is a bug and they are working on it. So... one day we will see it fixed I guess. Until then, there is Moom to the rescue. If you want to try, I got Apples attention by tweeting to their Twitter AppleSupport channel.
A couple of things to note. Moom does work for me! But, I needed to do an extra to get it to work. After installing Moom, and setting up my application windows they way I want, I created a snapshot in Moom. Then, I updated the snapshot while holding the option key down. After doing this, I can now quickly reset the position of my apps to the secondary screen with my shortcut. Hope this helps someone else.
I presume Rectangle is this third-party application: https://rectangleapp.com/
This problem is evident even if one had never installed this application to begin with.
I do use Moom, which ostensibly does the same thing. I'll try going without that for one day and see whether the problem persists.
Edit: The problem still reproduces without Moom (3.2.24, build 3341).
MBP 14 (18,3) Mac OS 12.0.1 Belkin Thunderbolt 3 hub with 2 DP monitors. This might be a different issue, but after each sleep the monitors are mixed up making me have to go to Prefs -> Displays and rearrange them.
Same issue here for weeks. None of the updates have worked. Falls asleep for a minute and disaster of windows on all random spaces. Using a DELL P2715Q Display direct into the USB C port, no hub.
MacOC 12.1 (21C52)
MacBook Pro (13-inch, 2018, Four Thunderbolt 3 Ports), Intel Iris Plus Graphics 655 1536 MB
My new morning work routine is get coffee, sit-down, wake up my MBP14, and then spend a few contemplative minutes figuring out where my dozen or so windows have wandered off to in the night and but them back to their happy homes on one of three screens (laptop and 2 externals).
BTW I'm not using any dock anymore so both the Samsung 32 and Scepter 27 are both connected directly (one to the HDMI and one to a thunderbolt with a HDMI dongle) so this isn't a dock issue.
As much as I enjoy my new morning meditation I'd really appreciate it if Apple can fix this one.
With Monterey on my new Macbook 14" I have the same thing. Hooked up 2 external displays with Thunderbolt 3 to DisplayPort cables. Every time I come back to my laptop after a few minutes I have to rearrange all the windows back to their intended monitor/position. Stuff is totally random and pretty annoying.
No issue on Macbook 15" on Big Sur. All the same monitors, mainly the same software.
That's all good and well, but I actually *want* my Mac to sleep when I'm not using it (what's the point of it being on the whole time) - it's also a laptop, hence I sometimes disconnect my external displays, but when I come back and re-attach (one HDMI, on USB-C->HMDI, one more USB-C->Hub->HDMI) I encounter the same nonsense.
Rather than workarounds, Apple needs to fix this. My Microsoft Windows 10 desktop manages to retain the identity and arrangement of 3 monitors; heck, it even retained that knowledge on another Windows machine after I changed GPU Cards! If Microsoft <shudder> can do it, I have full confidence that the might of Cupertino's finest can spend a few cycles on addressing this once and for all...
Well, this is special. Since upgrading to 12.2, the workaround (Power Adapter mode, "Prevent your Mac from automatically sleeping when the display is off") stopped working.
My windows scrambled overnight and again today - after working for weeks with the poor but functional (for me) workaround.
Hi. I just bought a $4500 mac to help with productivity and having to chase displays and troll through hundreds comments to try to find an answer is the opposite of productive.
On the chance that there is a person here who is employed by Apple to provide solutions, can that person step forward by giving the formal answer? (BTW, I really do appreciate all others who have spent time and energy trying to do Apple's job by coming up with solutions).
I just installed 12.2.1 and this is happening. it was not, before the update. Is this a regression? I have a setup with 2 external monitors, and all the windows collapse to the main monitor ( the one with the dock ), shortly after I lock the screen. I I unlock right away, they will still be OK, but given a bit, they will always collapse!
Bump.
2020 M1 mbp, didn't have a problem on Big Sur, upgraded to Monterey and suddenly has the issue. Monitor plugged into hdmi through a dongle. Super annoying.
Also the fact that the app windows don't seem to snap to fit to the desktops on the display when I drag them over in Mission Control view is slightly extra annoying too; they're always a few inches below the display window itself. Nitpicky, but it didn't happen before.
I haven't been able to replicate it consistently yet with my M1Pro 2021 mbp on Monterey however, but it does happen. Maybe I just haven't given it enough time while sleeping every time I test. Or maybe there's some variability with using the dongle vs the hdmi port.
i tried this workaround and it "mostly" works. a few windows wandered to other displays, but most stuck. the workaround posted earlier by jon hitchcock works better, but it's only a matter of time before i forget the hide all and have a window relocation reconstruction project :-)
That's not what I'm seeing on my setup. I always leave my MBP14 plugged in and still get windows roulette every morning. Now I am getting the power through a hub so maybe something in that. Maybe I'll try a few experiments to see what happens if I run the power straight in.
Same issue brand new MacBook Pro 16 Maxed out, my main 4k monitor wakes a little later and all the safari or Firefox screens have either jumped to the MacBook monitor or have resized to the MacBook resolution on the 4k monitor (as in the safari browser snaps to the bottom left of the 4k monitor and retains the same small size and aspect ratio of the MacBook monitor). It also screws with my Adobe Illustrator and After Effects palettes set up on the laptop monitor, I have to reset my custom viewport every single time.
I'm new to MacOS and it's awesome but this windows constantly rearranging is super duper undesirable. I run three displays, 2 external LGs. With Debian and Ubu, I could fix the unfixable with terminal commands. I'm not sure if Apple permits such tinkering but I'm willing to try if that's what's required. I have Apple Care and I think that means I can call so I guess I'm going to do that because I haven't found the answer on the interwebs.
Does anything look out of place below?
SPECS
----------------
Chipset Model: Apple M1 Pro
Type: GPU
Bus: Built-In
Total Number of Cores: 16
Vendor: Apple (0x106b)
Metal Family: Supported, Metal GPUFamily Apple 7
Displays:
LG HDR 4K:
Resolution: 3840 x 2160 (2160p/4K UHD 1 - Ultra High Definition)
UI Looks like: 1920 x 1080 @ 60.00Hz
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: Yes
Color LCD:
Display Type: Built-in Liquid Retina XDR Display
Resolution: 3456 x 2234 Retina
Mirror: Off
Online: Yes
Automatically Adjust Brightness: No
Connection Type: Internal
LG HDR 4K:
Resolution: 3840 x 2160 (2160p/4K UHD 1 - Ultra High Definition)
UI Looks like: 1920 x 1080 @ 60.00Hz
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: Yes
Same. When my M1 Macbook Pro wakes from screen lock, the windows will have switched displays. My window grouping setting is turned off, and it will happen for apps that only have 1 window open, anyway. It is super annoying.
Monterey seems to not remember which display should show which windows after sleep wakeup
