I have just installed the proprietary nVidia driver on Debian 10 on a Dell G3 notebook. It can see the monitor I have plugged in over HDMI and works great, but can no longer detect the built in screen. (Nouveau did the opposite).
xrandr gives:
Screen 0: minimum 8 x 8, current 1080 x 1920, maximum 32767 x 32767
HDMI-0 connected primary 1080x1920+0+0 left (normal left inverted right x axis y axis) 527mm x 296mm
1920x1080 60.00*+ 59.94 50.00 60.05 60.00 50.04
1600x1200 60.00
1600x900 60.00
1280x1024 75.02 60.02
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
How can I start using the built in screen again alongside this?