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Macbook no longer detecting Viewsonic portable monitor

I have a Viewsonic portable monitor (VG1655) which used to work with my MacBook Air M1 but now it isn't getting a signal. How do I get my MacBook to detect this monitor again? It seems to still work with other monitors.


MacBook Air M1

Ventura 13.2.1


I've tried all of the following:


  1. Check the connections:
  2. Check the monitor settings:
  3. Restart MacBook Air
  4. Check for software updates
  5. Try a different cable
  6. Try a different port


MacBook Pro (M1, 2020)

Posted on Mar 22, 2023 8:41 PM

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1 reply

Macbook no longer detecting Viewsonic portable monitor

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