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"