Fresh install, multi monitor setup; native laptop screen won't enable

New Manj user here, moving from Ubunutu. Learning nvidia drivers has been a ride the past few days, and while it's been fun, I finally figured out that I need some help. I have a multi-monitor setup and after a load of trial and error and help from reading this board, I learned that multi-monitor is only supported under nvidia non-free drivers. That's fine with me, battery/power isn't a major concern, having multiple monitors IS my concern.

I can only get my external monitor to show up, or my laptop screen, but never the two shall meet. The system sees them, but I'm missing some (very likely BASIC) configuration to make them work at the same time. I had this working fine under Ubuntu 19.10, so I know it can work, I just don't understand why it did.

Here's my system

❯ neofetch --backend off                                                                                                               
bdm-kde@phyzz 
------------- 
OS: Manjaro Linux x86_64 
Host: Oryx Pro oryp5 
Kernel: 5.6.7-1-MANJARO 
Uptime: 2 hours, 47 mins 
Packages: 1079 (pacman) 
Shell: zsh 5.8 
Resolution: 2560x1080 
DE: Plasma 
WM: KWin 
WM Theme: Breeze 
Theme: Breeze Dark [Plasma], Breath [GTK2/3] 
Icons: breeze-dark [Plasma], breeze-dark [GTK2/3] 
Terminal: konsole 
Terminal Font: Fira Code Retina 12 
CPU: Intel i7-9750H (12) @ 4.500GHz 
GPU: Intel UHD Graphics 630 
GPU: NVIDIA GeForce RTX 2060 Mobile 
Memory: 3361MiB / 31829MiB 
❯ inxi -Gxxxz                                                                                                                          
Graphics:  Device-1: Intel UHD Graphics 630 vendor: CLEVO/KAPOK driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:3e9b 
           Device-2: NVIDIA TU106M [GeForce RTX 2060 Mobile] vendor: CLEVO/KAPOK driver: nvidia v: 440.82 bus ID: 01:00.0 
           chip ID: 10de:1f11 
           Device-3: Acer BisonCam NB Pro type: USB driver: uvcvideo bus ID: 1-8:2 chip ID: 5986:9102 
           Display: x11 server: X.Org 1.20.8 compositor: kwin_x11 driver: nvidia resolution: 2560x1080~60Hz s-dpi: 81 
           OpenGL: renderer: GeForce RTX 2060/PCIe/SSE2 v: 4.6.0 NVIDIA 440.82 direct render: Yes 
❯ xrandr                                                                                                                               
Screen 0: minimum 8 x 8, current 2560 x 1080, maximum 32767 x 32767
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 2560x1080+0+0 (normal left inverted right x axis y axis) 798mm x 334mm
   2560x1080     59.94*+ 144.00   120.00   119.88   100.00    99.94    74.94  
   1920x1080    119.93   119.88   100.00    99.90    74.91    60.00    59.94  
   1600x900     119.95  
   1280x1024    119.96    75.02  
   1280x720     119.88   119.86   100.00    59.94  
   1152x864     119.77  
   1024x768     119.99    75.03    60.00  
   800x600       75.00    60.32  
   720x480       59.94  
   640x480       75.00    59.94    59.93  
DP-3 disconnected (normal left inverted right x axis y axis)
❯ xrandr --listmonitors                                                                                                                
Monitors: 1
 0: +*DP-2 2560/798x1080/334+0+0  DP-2

The external monitor is plugged in via displayport, works great. I can get the laptop screen to come up as long as the external monitor isn't plugged in.

❯ pacman -Qs randr                                                                                                                  [1]
local/arandr 0.1.10-4
    Provide a simple visual front end for XRandR 1.2.
local/autorandr 1.10-1
    Auto-detect connected display hardware and load appropiate X11 setup using xrandr
local/libxrandr 1.5.2-2
    X11 RandR extension library
local/lxrandr 0.3.2-1 (lxde)
    Monitor configuration tool (part of LXDE)
local/srandrd 0.5-1
    Simple randr daemon that reacts to monitor hotplug events
local/xorg-xrandr 1.5.1-1 (xorg-apps xorg)
    Primitive command line interface to RandR extension
~ >>> pacman -Qs nvidia                                                                                                                                                      [130]
local/lib32-libvdpau 1.3-1
    Nvidia VDPAU library
local/lib32-nvidia-440xx-utils 440.82-1
    NVIDIA drivers utilities (32-bit)
local/libvdpau 1.3-1
    Nvidia VDPAU library
local/linux56-nvidia-440xx 440.82-7 (linux56-extramodules)
    NVIDIA drivers for linux.
local/mhwd-nvidia-340xx 340.108-1
    MHWD module-ids for nvidia 340.108
local/mhwd-nvidia-390xx 390.132-1
    MHWD module-ids for nvidia 390.132
local/mhwd-nvidia-418xx 418.113-1
    MHWD module-ids for nvidia-418xx 418.113
local/mhwd-nvidia-430xx 430.64-1.0
    MHWD module-ids for nvidia-430xx 430.64
local/mhwd-nvidia-435xx 435.21-1.0
    MHWD module-ids for nvidia 435.21
local/mhwd-nvidia-440xx 440.82-1
    MHWD module-ids for nvidia 440.82
local/nvidia-440xx-utils 440.82-1
    NVIDIA drivers utilities

I've tried several different randrs. I can see the system notice the displayport activity when I plug/unplug, but for the life of me I can't get both monitors to activate at the same time.

I'd love to know how to troubleshoot this myself, but I'm at wits end on what I'm supposed to read figure this out. All I need is a push.

Thanks.

Most laptops have a special button to change the screen your system is using.

As you didn't provide a full inxi output we don't know what system you have but on my Acer it's Fn+F6 and can swap between internal only, external only, mirrored and extended.

Is that what you're missing?

:innocent:

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.

Forum kindly sponsored by