Hello,
I have a MacBook Pro (13-inch, 2020, Two Thunderbolt 3 ports). As written in this article, https://support.apple.com/en-us/HT211191 I should be able to connect two 4k external monitors. I have two monitor less than 4K but impossible to connect both. Only one is active.
When I disconnect the first, the second come active so the adapters are all okay.
Any idea why this is not working as expected ?
Thx
MacBook Pro 13″, macOS 11.0
It’s a hardware restriction and will not change. The M1 chip supports one external display (in the case of the M1 Mac Mini you get two, but that’s only because there’s no internal display).
These are the low end Apple silicon Macs, future chips (M1x, whatever) used in a 16” model or desktop Mac will almost certainly support >1 display.
The only option in your case is a ‘fake’ extra display using a DisplayLink hub. It won’t be hardware accelerated, won’t work with AppleTV, and is subject to being borked by macOS updates at least until drivers are updated. But it may work for you.
It’s a hardware restriction and will not change. The M1 chip supports one external display (in the case of the M1 Mac Mini you get two, but that’s only because there’s no internal display).
These are the low end Apple silicon Macs, future chips (M1x, whatever) used in a 16” model or desktop Mac will almost certainly support >1 display.
The only option in your case is a ‘fake’ extra display using a DisplayLink hub. It won’t be hardware accelerated, won’t work with AppleTV, and is subject to being borked by macOS updates at least until drivers are updated. But it may work for you.
Only the currently active one is displayed. If i try to press Option and "Detect Monitors", nothing append.
I'm just watching on the tech specs of the product on the apple website and that's what is written:
Video Support
Simultaneously supports full native resolution on the built-in display at millions of colors and:
So now, I don't know if more than one external display should be supported as described on the support page for less than 6K monitors...
Is your Mac one of the new M1 models? These two models are not the same:
If you have one of the new M1 Macs (they also have two TB3 ports), those only support a single external display.
What adapters are you using?
A LMP USB-C mini Dock with an HDMI output and a simple VGA Adapter
Both connected separately to the Mac?
Yes on two separate Thunderbolt port
Odd. With both connected, what is shown in System Preferences > Displays > Arrangement?
Indeed, this is a new M1 Mac ... So I have my answer.
Do you know if this is an hardware restriction or if i can expect an update than can add the support of two external monitors ?
Okay, thank you very much for your help ! I will test your workaround :-D
Use multiple displays with your MacBook Pro
