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Tags: drivers   nvidia  
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URL: https://askubuntu.com/q/1165689
Title: Nvidia drivers Ubuntu 18.04 - Dell G5 15
ID: /2019/08/14/Nvidia-drivers-Ubuntu-18.04-Dell-G5-15
Created: August 14, 2019    Edited:  August 15, 2019
Upload: November 24, 2022    Layout:  post
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It might be an β€œ18.04 thing”: External monitor not detected on Ubuntu 18.04. I’ve never experienced it upgrading to 18.04 or 19.04 but I’m already using LightDM.

I have a close but not identical system. Dell AW 17R3, I-7 6700HQ Intel HD 530 iGPU, nVidia GTX 970M GPU. Besides comments above, I’ll share my xorg.conf in hopes it might help:

$ cat /etc/X11/xorg.conf

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "nvidia"
    Inactive "intel"
EndSection

Section "Monitor"
    Identifier "DP-1-1"
    Modeline "3840x2160_54.00"  637.50  3840 4152 4568 5296  2160 2163 2168 2230 -hsync +vsync
    Option "PreferredMode" "3840x2160_54.00"
EndSection

Section "Device"
    Identifier "intel"
    Driver "modesetting"
    BusID "PCI:0@0:2:0"
    Option "AccelMethod" "None"
EndSection

Section "Screen"
    Identifier "intel"
    Device "intel"
EndSection

Section "Device"
    Identifier "nvidia"
    Driver "nvidia"
    BusID "PCI:1@0:0:0"
    Option "ConstrainCursor" "off"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
    Option "AllowEmptyInitialConfiguration" "on"
    Option "IgnoreDisplayDevices" "CRT"
EndSection

Ignore the DP-1-1 monitor section. It is only for my 3rd monitor which has a finicky; 4K TV, or Thuderbolt 3 adapter, or cable or all three.

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