Laptop screen off and HDMI on when install nVidia proprietary driver on Debian 10

Hi, I’ve installed the proprietary nVidia driver on my Debian 10 - buster. I’m using a Dell G3 3590 notebook, with GeForce GTX 1660 Ti Max-Q.

When I installed the nVidia driver, only the external monitor runs, the laptop screen turns off. I used to many versions of nVidia driver and tried many solutions…but still got fail…

I’d like to use both screens. I don’t know how to proceed in this case. Anyone could help me?

Thanks a lot.

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Hey guys. This works for me. Thanks a lot!