Adding a second monitor with new macpro 13" M1 laptop

dbnation wrote:

Really frustrated with brand new macpro M1 laptop. Have an a powered adapter with HDMI cable to 28" 4k monitor (Samsung) When macpro goes to sleep mode, tapping keys monitor getting white noise, goes into loop searching for HDMI 1, HDMI @ etc. then flashed to ghost image?

What to do?

Will the offical apple USB-C Digital AV Multiport Adapter work to solve this problem? Product info on this adpater only mentions OS Mohave?

Please need help, searching online

Did you try the DisplayPort input on your display.

USB-C port (select models only)  Lower version USB-C cables will not support the DisplayPort video input function.

https://www.apple.com/us/search/Moshi-USB-C-to-DisplayPort-Cable?tab=accessories

The USB-C A/V adapter is designed for one display and the USB-C port is for power input only.

https://www.apple.com/shop/product/MUF82AM/A/usb-c-digital-av-multiport-adapter

Get help with video issues on external displays connected to your Mac -

https://support.apple.com/en-us/HT201177

About the video ports on Mac - Apple Support