Unable to connect my MacBook Air M2 to external monitor through USB-C docking station

Hello joakim41,

You may find some helpful info and steps for issues with the external display being dark here: If your external display is dark or low resolution - Apple Support

Your external display will be dark or use a lower resolution or refresh rate if your video cable or any adapter you may be using with it doesn't support the resolution and refresh rate of the display. If you're using a Thunderbolt or USB-C adapter, it must also be compliant with DisplayPort Alt Mode, Thunderbolt 3, or Thunderbolt 4.

If the display is connected to a Mac laptop computer with a closed lid, make sure that the Mac is connected to power and using an external keyboard and mouse.

Update software

Software can affect display detection, the quality of the image on your display, and the resolutions and refresh rates available to your display.

• Install the latest macOS updates, which also deliver firmware updates for displays made by Apple.

• If your display is not made by Apple, make sure that it's using the latest firmware from the manufacturer. Check your display's documentation or the manufacturer's website for details.

If you still need help

• Make sure that your Mac itself is turning on. Learn what to do if your Mac doesn't turn on, or what to do if your Mac turns on but doesn't start up all the way.

• If the display is working but its picture seems blurry, try changing the resolution. The display's default, native resolution might be sharper than a scaled resolution. Some third-party displays have built-in controls that you can use to adjust picture sharpness.

• If you still need help, contact Apple Support.

Cheers.