fbdev(4) - NetBSD Manual Pages

FBDEV(4)                                                              FBDEV(4)




NAME

       fbdev - video driver for framebuffer device


SYNOPSIS

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


DESCRIPTION

       fbdev  is  an  XFree86  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 XF86Config(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 sec-
       tion 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  sec-
       tion.   See above for a sample line.  You can use "XFree86 -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:
              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.   Default: off.


SEE ALSO

       XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7), fbdevhw(4)


AUTHORS

       Authors include: Gerd Knorr, Michel Danzer, Geert Uytterhoeven



4.5.0                               XFree86                           FBDEV(4)