Fix X11 output problem

Problem: X only shows a empty desktop
Cause: Main screen goes somewhere else
Fix:
1) Add/Modify "/etc/X11/xorg.conf" to disable specific output

https://wiki.ubuntu.com/X/Quirks


Section "Device"
Identifier "Configured Video Device"
Option "monitor-LVDS" "LVDS"
EndSection

Section "Monitor"
Identifier "LVDS"
Option "Ignore" "True"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
EndSection

2) Disable KMS in kernel boot command line by appending "nomodeset"

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