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       fbdev - video driver for framebuffer device


       Section "Device"
         Identifier "devname"
         Driver "fbdev"
         BusID  "pci:bus:dev:func"


       fbdev  is  an  Xorg  driver  for  framebuffer  devices.  This is a non-
       accelerated driver, the following framebuffer depths are supported:  8,
       15,  16, 24.  All visual types are supported for depth 8, and TrueColor
       visual is supported for the other  depths.   Multi-head  configurations
       are supported.


       The  fbdev  driver  supports all hardware where a framebuffer driver is
       available.  fbdev uses the os-specific submodule fbdevhw(4) to talk  to
       the  kernel device driver.  Currently a fbdevhw module is available for


       Please refer to xorg.conf(5) for general configuration  details.   This
       section only covers configuration details specific to this driver.

       For  this  driver  it  is  not  required to specify modes in the screen
       section of the config file.  The fbdev driver can pick up the currently
       used  video  mode  from the framebuffer driver and will use it if there
       are no video modes configured.

       For PCI boards you might have  to  add  a  BusID  line  to  the  Device
       section.   See above for a sample line.  You can use "Xorg -scanpci" to
       figure out the correct values.

       The following driver Options are supported:

       Option "fbdev" "string"
              The framebuffer device to use. Default: /dev/fb0.

       Option "ShadowFB" "boolean"
              Enable or disable use of the shadow framebuffer layer.  Default:

       Option "Rotate" "string"
              Enable  rotation  of  the display. The supported values are "CW"
              (clockwise, 90 degrees), "UD" (upside  down,  180  degrees)  and
              "CCW"  (counter  clockwise,  270  degrees).  Implies  use of the
              shadow framebuffer layer.   Default: off.


       Xorg(1), xorg.conf(5), Xserver(1), X(7), fbdevhw(4)


       Authors include: Gerd Knorr, Michel Danzer, Geert Uytterhoeven