external monitor / Macbook pro
Hello all, I just installed an external monitor to my MBP using an HDMI cable. However, in order for me to see the picture on the external monitor, I have to keep the MBP open, if I close the lid of the MBP, the external monitor goes black. I know this is probably a setting somewhere, but I can't find it. Can anyone help?
Many thanks!
MacOS Catalina 10.16.7
MacBook Pro 13″, macOS 10.15