TL;DR: Was using Ubuntu 18.04. Laptop suddenly stopped recognizing external ASUS monitor. Formated laptop and installed Kubuntu 18.04. Problem persists.
Hi everyone. Last week I was using Ubuntu and suddenly my laptop stopped detecting my ASUS external monitor. I didn't try to solve the issues because I was on exams at college and I can still work with my laptop's monitor. However, after understanding how better KDE is than Gnome3, I decided to install Kubuntu 18.04 because I'm too lazy to install KDE on Ubuntu and I also had some other issues that I guessed would be solved with a fresh OS install. And they did, except that the laptop still doesn't recognize my external monitor.
The ASUS monitor works, I tested it with a Raspberry Pi. My laptop is an HP Omen, first gen. I think. I have an NVIDIA GeForce GTX 960 as my GPU
I've tried this, as other threads suggested:
- Changed my Display Manager to LightDM
- Changed the NVIDIA drivers to Noveau by selecting the second option of this list
- Then went back to the first option because that didn't work
- Detect the monitor through NVIDIA X Server Settings at Server Configuration > Detect displays. Nothing happens.
The output of xrandr with the second monitor connected to the laptop via HDMI:
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
HDMI-0 disconnected (normal left inverted right x axis y axis)
eDP-1-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1920x1080 60.01*+ 60.01 59.97 59.96 59.93 40.01
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
1920x1080 60.01
The contents of /etc/X11/xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 390.77 (buildmeister@swio-display-x64-rhel04-14) Tue Jul 10 23:19:22 PDT 2018
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
