NAME

       fbdev - video driver for framebuffer device

SYNOPSIS

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

DESCRIPTION

       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.

SUPPORTED HARDWARE

       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 linux.

CONFIGURATION DETAILS

       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.

       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. Mandatory for 24bpp framebuffers  on  newer
              servers. Default: on.

       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. Disabled for 24bpp framebuffers. Default: off.

SEE ALSO

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

AUTHORS

       Authors include: Gerd Knorr, Michel Dänzer, Geert Uytterhoeven