1FBDEV(4)                   Kernel Interfaces Manual                   FBDEV(4)
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NAME

6       fbdev - video driver for framebuffer device
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SYNOPSIS

9       Section "Device"
10         Identifier "devname"
11         Driver "fbdev"
12         BusID  "pci:bus:dev:func"
13         ...
14       EndSection
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DESCRIPTION

17       fbdev  is an Xorg driver for framebuffer devices.  This is a non-accel‐
18       erated driver, the following framebuffer depths are supported:  8,  15,
19       16, 24.  All visual types are supported for depth 8, and TrueColor vis‐
20       ual is supported for the other depths.  Multi-head  configurations  are
21       supported.
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SUPPORTED HARDWARE

24       The  fbdev  driver  supports all hardware where a framebuffer driver is
25       available.  fbdev uses the os-specific submodule fbdevhw(4) to talk  to
26       the  kernel device driver.  Currently a fbdevhw module is available for
27       linux.
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CONFIGURATION DETAILS

30       Please refer to xorg.conf(5) for general configuration  details.   This
31       section only covers configuration details specific to this driver.
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33       For  this driver it is not required to specify modes in the screen sec‐
34       tion of the config file.  The fbdev driver can pick  up  the  currently
35       used  video  mode  from the framebuffer driver and will use it if there
36       are no video modes configured.
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38       For PCI boards you might have to add a BusID line to  the  Device  sec‐
39       tion.  See above for a sample line.
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41       The following driver Options are supported:
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43       Option "fbdev" "string"
44              The framebuffer device to use. Default: /dev/fb0.
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46       Option "ShadowFB" "boolean"
47              Enable or disable use of the shadow framebuffer layer. Mandatory
48              for 24bpp framebuffers on newer servers. Default: on.
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50       Option "Rotate" "string"
51              Enable rotation of the display. The supported  values  are  "CW"
52              (clockwise,  90  degrees),  "UD"  (upside down, 180 degrees) and
53              "CCW" (counter clockwise,  270  degrees).  Implies  use  of  the
54              shadow  framebuffer  layer.  Disabled  for  24bpp  framebuffers.
55              Default: off.
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SEE ALSO

58       Xorg(1), xorg.conf(5), Xserver(1), X(7), fbdevhw(4)
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AUTHORS

61       Authors include: Gerd Knorr, Michel Dänzer, Geert Uytterhoeven
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65X Version 11                xf86-video-fbdev 0.5.0                    FBDEV(4)