2019 MBP and Samsung crg9 49" monitor getting only 1920 x 1080 resolution

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2019 MBP and Samsung crg9 49" monitor getting only 1920 x 1080 resolution

I have a 2019 16" Macbook Pro. I got a USB-C to HDMI cable and connected the laptop to the monitor, yesterday when i plugged it in (for the first time), my laptop screen got squished horizontally and display looked good on the Samsung 49" monitor. Today however, it shows only 1920 x 1080 option as max. Yesterday when I went to the display - color option, i saw crg9 profile show up. Now, i just see a generic Display profile. How to fix this. This laptop has two graphics card, I have turned off "Automatic Graphic Switching" so it picks the AMD graphics card all way and can confirm that when I go to Display settings

MacBook Pro 15”, macOS 10.15

Posted on Oct 11, 2020 6:36 PM

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Answer 1

Top-ranking reply

Grant Bennet-Alder

Level 10

140,813 points

Oct 11, 2020 7:15 PM in response to merc256

If the built-in display changed the you hooked up the external display, you are using [√] Mirror displays.

This uses a compromise resolution that is computed so as to be supported by BOTH displays, which are then driven by the same display-generator.

Use the Command-F1 key to toggle Mirroring, Or use

System preferences > Displays > Arrangement

.

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Answer 2

merc256 Author

Level 1

8 points

Oct 12, 2020 2:18 PM in response to Grant Bennet-Alder

Agreed, got a $15 DisplayPort to USB-C cable and was able to get the full resolution (5120 x 1440). But now the colors look a little washed out. Need to fiddle with monitor setting to see how to get the color to pop

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Answer 3

merc256 Author

Level 1

8 points

Oct 12, 2020 7:13 AM in response to merc256

I was using the cable that came with Samsung CRG9, the hdmi connector is a little short on it. After trying with another HDMI cable I was able to go to 3840x1080. Going to try later with displayport cable and see how that goes

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Answer 4

Oct 12, 2020 7:38 AM in response to merc256

For resolution above HD TV (1920 by 1080) DisplayPort family is preferable.

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Answer 5

merc256 Author

Level 1

8 points

Oct 12, 2020 3:58 AM in response to Grant Bennet-Alder

tried that, but no luck still at 1920x1080. currently I have my laptop closed, "About this mac" -> "Display" shows only one screen with 46" and 1920x1080, where as my monitor is 49"

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2019 MBP and Samsung crg9 49" monitor getting only 1920 x 1080 resolution

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