I have files in /etc/X11/xorg.conf.d rw-r--r--. 1 silentm silentm 311 Jul 9 13:25 00-keyboard.conf -rw-r--r--. 1 silentm silentm 328 Jul 9 14:28 01-display.conf This is my 01-display.conf # This file goes into /etc/X11/xorg.conf.d Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" SubSection "Display" Viewport 0 0 Depth 24 Modes "3840x2160" "1920x1080" "1600x1200" "1440x900" "1368x768" "1360x768" "1366x768" "1024x768" "800x600" "640x480" EndSubSection EndSection That looks fine. But the X log file shows its NOT being used. Why ? 9.987] (==) Using config directory: "/etc/X11/xorg.conf.d" [ 9.987] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 9.988] (==) No Layout section. Using the first Screen section. [ 9.988] (==) No screen section available. Using defaults. [ 9.988] (**) |-->Screen "Default Screen Section" (0) [ 9.988] (**) | |-->Monitor "<default monitor>" [ 9.988] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. Why is my xorg.conf.d files not being used ? Jerry