plan9 man page for fbdev

FBDEV(4)						     Kernel Interfaces Manual							  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 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.  You can use "Xorg -scanpci" to fig-
       ure 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
       Xorg(1), xorg.conf(5), Xserver(1), X(7), fbdevhw(4)

AUTHORS
       Authors include: Gerd Knorr, Michel Danzer, Geert Uytterhoeven

X Version 11						      xf86-video-fbdev 0.4.2							  FBDEV(4)