External Monitor magenta

I have a MACBOOK PRO with Catalina 10.15.5 and when I plug a external monitor (LG E2350V-PN) the monitor shows the image in magenta.


The same monitor with another computer (windows) shows normal color


The MAcbook connected to a tv with same hub shows normal color


I already tried to turn off the true tone, and the night shift and nothing happens.


Can someone help with this issue?


Tanks

Rui Pereira




MacBook Pro 13”, macOS 10.15

Posted on Jul 8, 2020 9:28 AM

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Question marked as Top-ranking reply

Posted on Jul 8, 2020 9:48 AM

If you mean the entire screen looks like magenta (no white) and is otherwise overlaid with black and shades of gray, then the green channel is not making it to the monitor.


Replace the cable. If it's the same cable, make sure it's fully seated.

3 replies

Jul 8, 2020 12:04 PM in response to RuiGabriel

I see. He's forcing an RGB signal, which is normally YCbCr with HDMI.


Do you have a way to connect the monitor to your MacBook Pro other than HDMI? Like DisplayPort or USB-C?


Edit: Sorry, should have looked before asking. That model only has DVI or HDMI inputs. Basically, this is a pretty old (in computer years) and obsolete monitor. They're being cleared out on some sites for $99. You should consider getting a new, modern and up-to-date monitor.

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External Monitor magenta

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