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 Xorg driver for framebuffer devices. This is a non-accel- erated 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(5x) 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 " -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 Xorg(1x), xorg.conf(5x), xorgconfig(1x), Xserver(1x), X(7), fbdevhw(4)

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

X Version 11 xf86-video-fbdev 0.3.0 FBDEV(4)