External monitor blacks out on macbook m1 air

I have a lenovo G24-20 165hz moniter it is working fine with my windows system but whenever I connect it to my macbook I always encounter the monitor screen blacking out. If I use any heavy applications like chrome or ios emulator it's blacks out completely. The macbook is currently on ventura os and using a USB hub to connect the monitor.

MacBook Air 13″, macOS 13.1

Posted on Jan 20, 2023 05:42 AM

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Jan 22, 2023 03:18 PM in response to Hardhguy

Hi Hardhguy,


Let's resolve your issue by completing the steps listed here: If your external display isn't detected or appears blurry when connected to your Mac - Apple Support that are also listed below.


"If your display is blank or not detected

Try these steps if you don't see an image on your display.

Check your cable or adapter

Disconnect the cable from your external display from your Mac, then reconnect it. If the cable from your external display doesn't connect to the ports on your Mac, you can use a USB-C or Thunderbolt adapter. If you're using a USB-C or Thunderbolt adapter to connect a display, the adapter must be compliant with DisplayPort Alt Mode or Thunderbolt / USB 4.

Check how many displays you can connect

If you're connecting multiple displays to your Mac, use the Tech Specs page to find out how many external displays your Mac supports.

  1. Choose Apple menu  > About This Mac, double-click your serial number, then press Command-C to copy it.
  2. Go to the Tech Specs page, click the Search Tech Specs bar, press Command-V to enter your computer's serial number, then click Search.
  3. Click the specs page for your Mac. The number of displays your Mac supports appears under Video Support or Graphics."


Best regards.



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External monitor blacks out on macbook m1 air

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