FBDEV(4)            (xf86-video-fbdev 0.5.0)             FBDEV(4)

     NAME
          fbdev - video driver for framebuffer device

     SYNOPSIS
          Section 34Device34
            Identifier 34devname34
            Driver 34fbdev34
            BusID  34pci: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 config-
          ured.

          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 34fbdev34 34string34
               The framebuffer device to use. Default: /dev/fb0.

          Option 34ShadowFB34 34boolean34
               Enable or disable use of the shadow framebuffer layer.
               Mandatory for 24bpp framebuffers on newer servers.
               Default: on.

          Option 34Rotate34 34string34
               Enable rotation of the display. The supported values

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     FBDEV(4)            (xf86-video-fbdev 0.5.0)             FBDEV(4)

               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 D:anzer, Geert Uytterho-
          even

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