Late 2019 27" iMac - detects two displays after install? |

solomani
Newbie Boot Camper

Posts: 2

Late 2019 27" iMac - detects two displays after install? Apr 10, 2021 5:28:50 GMT

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Post by solomani on Apr 10, 2021 5:28:50 GMT

Hi all,

This is weird - after installing the latest radeion drivers my 5k monitor is detecting as two screens, any idea how to fix this? Currently I am stuck playing games on half the screen. Here are some screenshots:

Login screen:
imgur.com/Q4mbOrJ

Windows Display Settings:
imgur.com/ps2vX6g

Radeon Display Info (thinks one is display port and one is EDP - not sure what that is):
imgur.com/cm0EiEt
imgur.com/cqsRbpj

Thanks in advance.

Attachments:

.:Hydrogen:. Legendary Guru 2018 Macbook Pro 15 w/ 8850H + 560X Posts: 110	Late 2019 27" iMac - detects two displays after install? Apr 10, 2021 7:41:55 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by .:Hydrogen:. on Apr 10, 2021 7:41:55 GMT You might need to use blue drivers instead
	2018 Macbook Pro 15 with i7 8850h, Radeon Pro 560X, 16GB RAM, 512GB Storage, Samsung S27F359FHC (1080p 72hz VA HDMI only, freesync compatible but not working for some reason) External monitor

solomani Newbie Boot Camper Posts: 2	Late 2019 27" iMac - detects two displays after install? Apr 10, 2021 9:46:21 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by solomani on Apr 10, 2021 9:46:21 GMT Cool, thanks.

IceMan Webmaster Posts: 423	Late 2019 27" iMac - detects two displays after install? Apr 10, 2021 10:56:34 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by IceMan on Apr 10, 2021 10:56:34 GMT or in windows settings you say only show display 1 and lower your res to 4K 3840x2160
	iMac 5k 2020: Core i7 @ 3,8 GHZ, 1TB SSD, 32 GB RAM, AMD 5700 XT 16 GB VRAM GPU.

pat314 Newbie Boot Camper Posts: 1	Late 2019 27" iMac - detects two displays after install? Jun 21, 2023 16:49:57 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by pat314 on Jun 21, 2023 16:49:57 GMT If I choose to only use display 1 and make my resolution 3840x2160 is it still rendering the second monitor?

IceMan
Webmaster

Posts: 423

Late 2019 27" iMac - detects two displays after install? Jun 21, 2023 19:33:58 GMT

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Post by IceMan on Jun 21, 2023 19:33:58 GMT

Jun 21, 2023 16:49:57 GMT pat314 said:

If I choose to only use display 1 and make my resolution 3840x2160 is it still rendering the second monitor?

no shouldn't be doing it becasue it says only show display 1

iMac 5k 2020: Core i7 @ 3,8 GHZ, 1TB SSD, 32 GB RAM, AMD 5700 XT 16 GB VRAM GPU.

Late 2019 27" iMac - detects two displays after install?

Post by solomani on Apr 10, 2021 5:28:50 GMT

Post by .:Hydrogen:. on Apr 10, 2021 7:41:55 GMT

Post by solomani on Apr 10, 2021 9:46:21 GMT

Post by IceMan on Apr 10, 2021 10:56:34 GMT

Post by pat314 on Jun 21, 2023 16:49:57 GMT

Post by IceMan on Jun 21, 2023 19:33:58 GMT