How Can I disable mirroring hp screen on macOS ? Displaylink driver is useless. screens are connected using
Hi all,
Monitor: 2 x HPE27ED G4 QHD
Connection:
Test 1: Monitors linked to each other by Display Port cable and one of them is linked to Mac using Usb-c cable.
Test 2: Monitors linked to Mac using g Usb-c cable each: only one monitor can make display
No docking station to test.
Anyone else struggling 
?
@Eskobar macOS does not support DisplayPort multiplexing so you can't have multiple monitors on one cable chain, and Macs with the M1 or M2 processors only support 1 external display unless using a DisplayLink dock (M1/M2 Pro/Max/Ultra Macs will support >1 external displays)
From m2 specs page:
Simultaneously supports full native resolution on the built-in display at 1 billion colors and:
Thunderbolt 3 digital video output
What this also means is that M1 and M2 computers do _not_ have Thunderbolt 4, since the definition of Thunderbolt 4 includes support for dual 4K displays, which is impossible here.
DisplayLink is a driver suite for DisplayLink Docks, if you don't have the dock then the software does nothing.
My current setup.
I typically use a MBP16 which does not need the dock to power 2x displays. However, my test M1 MBA will run both displays fine with this dock due to the DisplayLink Software. The only problem I have with the DisplayLink Software is macOS refuses to use the dock without the software unlike Windows which will at least use the docks basic functions.
Install this handy binary from fcanas to toggle mirroring settings:
https://github.com/fcanas/mirror-displays
Then use this syntax in a policy or script:
/usr/local/bin/mirror -on
/usr/local/bin/mirror -off
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