Hi Samuel Green,
Thanks for sharing the details. I can understand how annoying this would be, especially when it happens randomly and you have already tried more than one dock, including Microsoft docks.
To help narrow this down, could you please confirm a few things?
- What exact Surface Laptop model do you have?
- Are you using Windows 10 or Windows 11?
- When this happens, does only the built-in Surface screen go almost black, or do any external monitors go black too?
- Are you using an external monitor through the dock? If yes, what resolution and refresh rate is it using?
- Does the same issue happen when the Surface is used without any dock connected?
- If you connect the external monitor directly to the Surface, without the dock, does the issue still happen?
In the meantime, here are a few things worth checking that may help isolate the cause:
- Update Surface drivers, firmware, and dock firmware: Open the Surface app and check Help & support for any available Surface updates. Also go to Settings > Windows Update > Check for updates and install any available driver or firmware updates. If you are using a Microsoft Surface Dock, also make sure the dock firmware is up to date.
- Test without the dock for a while: Use the Surface normally without any dock connected and see if the built-in screen still goes dark.
- Bypass the dock if possible: If you use an external monitor, try connecting it directly to the Surface with a compatible USB-C/HDMI/DisplayPort adapter.
- Check the cable, adapter, and monitor settings: If an external display is involved, try a different high-quality video cable, avoid long cables or extra adapters if possible, and check the monitor’s input/port version setting from the monitor menu. You can also temporarily lower the refresh rate, for example from 120 Hz to 60 Hz, to see if the connection becomes more stable.
- Run Surface diagnostics: Open the Surface app and run the available diagnostics.
If the problem continues after updating everything, testing without the dock, testing a direct monitor connection, and clearing the display cache, then it may be worth contacting Microsoft Surface Support or arranging a hardware inspection. Since you have already tried multiple docks, the next thing to rule out would be the Surface’s display output path, graphics driver/firmware, or port-related hardware issue.
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