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-acceler-
ated 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 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 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 section.
See above for a sample line.
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. Mandatory
for 24bpp framebuffers on newer servers. 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. Disabled for 24bpp framebuffers. Default: off.
SEE ALSO
Xorg(1), xorg.conf(5), Xserver(1), X(7), fbdevhw(4)
AUTHORS
Authors include: Gerd Knorr, Michel Dänzer, Geert Uytterhoeven
X Version 11 xf86-video-fbdev 0.5.0 FBDEV(4)
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