xorg.conf

Section "ServerLayout"
        Identifier     "X.org Configured"
        Screen      0  "Screen0" 0 0
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
        RgbPath      "/usr/X11/lib/X11/rgb"
        ModulePath   "/usr/X11/lib/modules/amd64"
        FontPath     "/usr/X11/lib/X11/fonts/TrueType/"
        FontPath     "/usr/X11/lib/X11/fonts/Type1/"
        FontPath     "/usr/X11/lib/X11/fonts/Type1/sun/"
        FontPath     "/usr/X11/lib/X11/fonts/F3bitmaps/"
        FontPath     "/usr/X11/lib/X11/fonts/misc/"
        FontPath     "/usr/X11/lib/X11/fonts/100dpi/"
        FontPath     "/usr/X11/lib/X11/fonts/75dpi/"
EndSection

Section "Module"
        Load  "IA"
        Load  "dbe"
        Load  "extmod"
        Load  "record"
        Load  "xtrap"
        Load  "GLcore"
        Load  "glx"
        Load  "dri"
        Load  "xtsol"
        Load  "freetype"
EndSection

Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbRules" "xorg"
        Option      "XkbModel" "jp106"
        Option      "XkbLayout" "jp"
        Option      "XkbOptions" "ctrl:nocaps"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "auto"
        Option      "Device" "/dev/mouse"
        Option      "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Monitor Model"
 ### Comment all HorizSync and VertSync values to use DDC:
        HorizSync    31.5 - 128.5
        VertRefresh  40.0 - 150.0
        ModeLine     "1920x1440" 234.0 1920 2048 2256 2600 1440 1441 1444 1500 -hsync +vsync
        ModeLine     "2048x1536@55" 255.0 2048 2068 2368 2640 1536 1556 1586 1592 -hsync +vsync
        ModeLine     "2048x1536@60" 255.0 2048 2056 2356 2700  1536 1556 1586 1592 -hsync +vsync
EndSection

Section "Device"

        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "ShadowFB"                  # [<bool>]
        #Option     "DefaultRefresh"            # [<bool>]
        #Option     "ModeSetClearScreen"        # [<bool>]
        Identifier  "Card0"
        #Driver      "vesa"
        Driver      "radeon"
        VendorName  "ATI Technologies Inc"
        BoardName   "Unknown Board"
        BusID       "PCI:1:5:0"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Card0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     1
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     4
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     8
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     15
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     32
                Modes    "2048x1536@60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
                Virtual 2048 1536
        EndSubSection
EndSection