Yesterday I installed the nvidia-driver-525 for my laptop with a GTX 1660ti and an AMD CPU with integrated graphics.
Everything worked fine (meaning I could see output on both screens), until I booted my laptop today. My external display works (supposedly the output of the nvidia gpu), but my internal laptop display displays a single underscore. I can switch to TTY1 and the TTY shows up on the internal display.
When I go to display settings, I can only see the external display. The internal display doesn't show up there.
If I unplug my external screen, nothing shows up on the internal screen and the only thing I see is the single underscore at the left of the screen.
I tried restarting lightdm, without any success.
I don't know what causes this and I hope someone can help. Thanks!
lspci | grep 'VGA' output:
01:00.0 VGA compatible controller: NVIDIA Corporation Device 1f95 (rev a1)
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c7)
xrandr output:
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 527mm x 296mm
1920x1080 60.00 + 74.97* 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
