Flickering or Blanking Video Issue with Dell S2721Q, S2721QS, and S3221QS Monitors when Connected to a M1 MacBook or Mini via USB-C to DP Adapter

Flickering or blanking video.

No cause information.

Flickering or Blanking Video

Your Dell S2721Q, S2721QS, and S3221QS monitor may have flickering or blanking video when using a USB-C to DisplayPort (DP) adapter.

Solution

The following adapters should be used with the Dell monitors to stop the flickering or blanking video issue.

• MacBook M1:
  • Dell USB-C to HDMI Adapter (Dell Part #47KD7)
  • Dell USB-C Mobile Adapter - DA310 (Dell Part #0XJD9N)
     
• Mac Mini M1:
  • Dell HDMI Cable
  • Dell USB-C to HDMI Adapter (Dell Part #47KD7)
  • Dell USB-C Mobile Adapter - DA310 (Dell Part #0XJD9N)

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