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I'm sure M2 will support multiple displays
you don't have to wait till M2 :) both M1 Pro and Max can do multiple displays through a Thunderbolt Hub like Caldigit's Element Hub. And it's not through displaylink, it's thunderbolt. If you are talking about more than 4 displays, then yes, displaylink would be a good solution.
 
Displaylink is hot garbage. I used a DisplayLink adapter to try to drive two Dell 27 inch displays from my M1 Air, but it could only drive the second monitor in a resolution no better than the Airs display.

Then it stopped working and I couldn’t care to try to fix it. Instead I’ve ordered a 16 MBP to just drive them directly.
It depends on the hardware. Get decent hardware and then call the technology garbage.
 
Could you give me the link to a dock that works? I am trying to see which one to buy.
QGeeM dock works fine.
 
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I'm using a WAVLINK dock with a Displaylink DL-3900 chipset, driving two simple 1920x1200 external monitors, with a 2021 MacBook pro (for the convenience of just plugging in one cable with everything docked). Strangely, the latest Displaylink beta driver 1.6 only allows me to use one external monitor. Troubleshooted a bit but no luck so far. Everything works fine with current driver 1.5.

My dock:
 
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It's strange that Apple's support for remembering window positioning has gone so far downhill.

Three options:


Not sure which is better. I only have 2 monitors that don't sleep, so the problem doesn't affect me right now.

Really? I have an Intel 16” MBP (2020) and it remembers my window positions well. I switch between working on the laptop and a 38” curved Dell monitor… and it does just fine.

I guess it might be that I do very different tasks when I’m plugged into the monitors (coding) vs on the laptop (meetings)… so maybe it’s because I don’t mess with the coding windows or workspace when it’s undocked.
 
Laptops support two screens, the laptop screen and external screen, so same as Mac Mini.
Does anyone know if the M1 13” MBA/MBP can support two external monitors while in clamshell mode (i.e. if the lid is closed, since it’s then only running two displays, and ignoring the built-in display).
 
There's still no way to rotate the *built-in* screen on an M1 Macbook is there? I know it's really awkward, but useful when reading some PDFs.
 
Does anyone know if the M1 13” MBA/MBP can support two external monitors while in clamshell mode (i.e. if the lid is closed, since it’s then only running two displays, and ignoring the built-in display).
It can’t without a DisplayLink adapter or DisplayLink dock.
 
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Finally! I've been using a DisplayLink adapter to add a third display to my M1 Mac mini, and have had to suboptimally run a landscape display on it. (I use three displays - two landscape, one portrait.) The portrait-mode display is the one that only ever displays text, so it has been the one I would have *preferred* be on DisplayLink, but I couldn't.
 
Displaylink is simply not a reliable solution from an IT perspective. You're better off telling your clients to purchase a M1 Pro/Max if they want to use multiple external displays.
 
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M1 MacBook Pro, Dell D6000 dock - working quite well with three screens or in clamshell mode. Only issue with this Beta is that the screen doesn't always wake from sleep (this was a bug in a previous version of the software which seems to have crept back in). It's not the end of the world - only seems to happen after leaving it for a few hours, which is usually at the start of the day.
 
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