Macbook Pro 2020 doesn't recognize second monitor while using usbc I want my MacBook pro-2020 to be closed and have one screen as the main screen(desktop) and the other screen as an extended one. I have 2 new Dell UltraSharp U2419HC monitors, and an UltraSharp U2419H (non-usbc).
I have connected one screen to my MacBook using type c to type c cable (from screen to MacBook) and another display port cable from one screen to another one.
It looks like either my mac detects only one screen, or either I can't get an extended view over the 2 Dell screens.
Currently, the 2 Dell screens display the same thing, my Desktop. When I open my MacBook screen, it detects it's own screen and the Dell screen that is attached with the USB c on extended mode but doesn't detect the second Dell monitor.
When I get into the System Pref -&gt; Displays I can only see the Dell monitor that is connected with USB c.
I have also tried to connect the USB c to a Dell laptop and it did work, so I assume it's not a connectivity issue, and furthermore when I'm connecting the second Dell screen using HDMI cable type c to my MacBook (overall 2 Dell monitors connected directly to my MacBook) it works.
Daisy-chaining monitors over USB-C is not supported on macOS. This is due to the fact that macOS does not support MST for monitor daisy-chaining, unlike for example Microsoft Windows. You will need to use Thunderbolt monitors in order to get display daisy-chaining working.
With your current hardware, you need to connect each monitor to its own port on the MacBook Pro - or get a Thunderbolt 3 dock that allows you to connect two monitors to the dock, and then the dock via one cable to the MacBook Pro.