fbdev(4) - NetBSD Manual Pages

FBDEV(4)		     XFree86			 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 sup
       ported.


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 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.  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  val
	      ues  are "CW" (clockwise, 90 degrees), "UD" (upside
	      down, 180 degrees) and  "CCW"  (counter  clockwise,
	      270 degrees). Implies use of the shadow framebuffer



4.2.1			     Version				1





FBDEV(4)		     XFree86			 FBDEV(4)


	      layer.   Default: off.


SEE ALSO

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


AUTHORS

       Authors	include: Gerd Knorr, Michel Dnzer, Geert Uytter
       hoeven
















































4.2.1			     Version				2