2 Monitors Detected, but only 1 displaying picture

jochem · 04-14-2022, 07:15 AM

I have exaclty the same issue on my M1 with Monterey:

macOS Monterey version 12.3.1
MacBook Pro M1, 2020
Display Link 1.6.1

Both screens detected but only one showing something. Other screen is turned on and auto detected on HDMI port but nothing showing.

One screen is a 1440p 144hz other is 1080p 144hz. The 1080p is not working. When i mirror display from main to the 1080p monitor all monitors work but that is useless.

Tried other ports on monitor, different cables, different resolutions but nothing works. Other setup with two of the same monitors (different from what iam using now) does work without any problems. Maybe the issue is two external monitors with different resolutions?

04-14-2022, 07:15 AM	#7
jochem Junior Member Join Date: Apr 2022 Posts: 4	I have exaclty the same issue on my M1 with Monterey: macOS Monterey version 12.3.1 MacBook Pro M1, 2020 Display Link 1.6.1 Both screens detected but only one showing something. Other screen is turned on and auto detected on HDMI port but nothing showing. One screen is a 1440p 144hz other is 1080p 144hz. The 1080p is not working. When i mirror display from main to the 1080p monitor all monitors work but that is useless. Tried other ports on monitor, different cables, different resolutions but nothing works. Other setup with two of the same monitors (different from what iam using now) does work without any problems. Maybe the issue is two external monitors with different resolutions? Last edited by jochem; 04-14-2022 at 07:28 AM.