FBDEV(4) UNIX Programmer's 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 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 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 values
are "CW" (clockwise, 90 degrees), "UD" (upside down,
180 degrees) and "CCW" (counter clockwise, 270
XFree86 Version 4.5.0 1
FBDEV(4) UNIX Programmer's Manual FBDEV(4)
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 Uytterhoe-
ven
XFree86 Version 4.5.0 2