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My laptop only fills the external monitor screen if a second monitor is attached -- any ideas on how to fix it? : r/computers
![Alecewey Portable Monitor for MacBook Laptop Screen Extender Dual Monitor Display 12'' Inch FHD 300 Nit External Monitor with Type-CSpeaker Alecewey Portable Monitor for MacBook Laptop Screen Extender Dual Monitor Display 12'' Inch FHD 300 Nit External Monitor with Type-CSpeaker](https://m.media-amazon.com/images/I/81tIoq5E4iL._AC_SL1500_.jpg)
Alecewey Portable Monitor for MacBook Laptop Screen Extender Dual Monitor Display 12'' Inch FHD 300 Nit External Monitor with Type-CSpeaker
![macos - How do I use only the external display with my MacBook Pro lid open on Lion? - Ask Different macos - How do I use only the external display with my MacBook Pro lid open on Lion? - Ask Different](https://i.stack.imgur.com/5NmBo.png)
macos - How do I use only the external display with my MacBook Pro lid open on Lion? - Ask Different
![My laptop's display is off, and it only detects my external monitor as the primary display. How to solve? : r/pcmasterrace My laptop's display is off, and it only detects my external monitor as the primary display. How to solve? : r/pcmasterrace](https://preview.redd.it/my-laptops-display-is-off-and-it-only-detects-my-external-v0-cxbiwgo8zrsb1.png?width=2000&format=png&auto=webp&s=1c0f68fcb24c6e663d0344fa1a6c85bfe5d9773e)
My laptop's display is off, and it only detects my external monitor as the primary display. How to solve? : r/pcmasterrace
![Amazon.com: Alecewey Portable Monitor for MacBook Laptop Screen Extender Dual Monitor Display 12'' Inch FHD 300 Nit External Monitor with Type-C/Speaker P1M Only for 14.2'' MacBook : Electronics Amazon.com: Alecewey Portable Monitor for MacBook Laptop Screen Extender Dual Monitor Display 12'' Inch FHD 300 Nit External Monitor with Type-C/Speaker P1M Only for 14.2'' MacBook : Electronics](https://m.media-amazon.com/images/I/81XhnfJU-pL.jpg)
Amazon.com: Alecewey Portable Monitor for MacBook Laptop Screen Extender Dual Monitor Display 12'' Inch FHD 300 Nit External Monitor with Type-C/Speaker P1M Only for 14.2'' MacBook : Electronics
![How to auto turn off laptop screen while using external monitor - ideapad - Windows - Lenovo Support AU How to auto turn off laptop screen while using external monitor - ideapad - Windows - Lenovo Support AU](https://download.lenovo.com/km/media/images/HT504128/displaym_20200430170007927.png)
How to auto turn off laptop screen while using external monitor - ideapad - Windows - Lenovo Support AU
![Nvidia graphic driver works in only external display on Ubuntu18.04 - Linux - NVIDIA Developer Forums Nvidia graphic driver works in only external display on Ubuntu18.04 - Linux - NVIDIA Developer Forums](https://forums.developer.nvidia.com/uploads/short-url/2aenKz02eplSwiQrQP9bygXtN1x.jpeg?dl=1)