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NV(4)									 NV(4)

NAME
       nv - NVIDIA video driver

SYNOPSIS
       Section "Device"
	 Identifier "devname"
	 Driver "nv"
	 ...
       EndSection

DESCRIPTION
       nv  is  an  Xorg driver for NVIDIA video cards.	The driver supports 2D
       acceleration and provides support for the following framebuffer depths:
       8,  15, 16 (except Riva128) and 24.  All visual types are supported for
       depth 8, TrueColor and DirectColor visuals are supported for the	 other
       depths  with the exception of the Riva128 which only supports TrueColor
       in the higher depths.

SUPPORTED HARDWARE
       The nv driver supports PCI, PCI-Express and AGP video  cards  based  on
       the following NVIDIA chips:

       RIVA 128		     NV3

       RIVA TNT		     NV4

       RIVA TNT2	     NV5

       GeForce 256, Quadro   NV10

       GeForce2, Quadro2     NV11 & NV15

       GeForce3, Quadro DCC  NV20

       nForce, nForce2	     NV1A, NV1F

       GeForce4, Quadro4     NV17, NV18, NV25, NV28

       GeForce FX, Quadro FX NV30, NV31, NV34, NV35, NV36, NV37, NV38

       GeForce 6XXX	     NV40, NV41, NV43, NV44, NV45, C51

       GeForce 7XXX	     G70, G71, G72, G73

       GeForce 8XXX, GeForce 9XXX
			     G80, G84, G86, G92, G94, G96, G98

       GeForce GTX	     GT200

CONFIGURATION DETAILS
       Please  refer  to xorg.conf(5) for general configuration details.  This
       section only covers configuration details specific to this driver.

       The driver auto-detects the chipset type and the amount of video memory
       present for all chips.

       The following driver Options are supported for pre-G80 hardware:

       Option "HWCursor" "boolean"
	      Enable or disable the HW cursor.	Default: on.

       Option "NoAccel" "boolean"
	      Disable	or  enable  acceleration.   Default:  acceleration  is
	      enabled.

       Option "UseFBDev" "boolean"
	      Enable or disable use of an OS-specific fb interface (and is not
	      supported	 on all OSs).  See fbdevhw(4) for further information.
	      Default: off.

       Option "CrtcNumber" "integer"
	      Many graphics cards with NVIDIA chips have  two  video  outputs.
	      The  driver attempts to autodetect which one the monitor is con‐
	      nected to.  In the case that autodetection picks the wrong  one,
	      this  option  may be used to force usage of a particular output.
	      The options are "0" or "1".  Default: autodetected.

       Option "Dualhead" "boolean"
	      Enables simple VBE-based dual head mode.	 This  sets  the  same
	      resolution  on both outputs and lays them out side-by-side.  The
	      screens will be panned together as one big metamode if the  vir‐
	      tual desktop is larger than both screens combined.

       Option "FlatPanel" "boolean"
	      The driver usually can autodetect the presence of a digital flat
	      panel.  In the case that this fails, this option can be used  to
	      force  the driver to treat the attached device as a digital flat
	      panel.  With this driver, a digital flat panel will work only if
	      it  was  POSTed  by  the	BIOS,  that is, the computer must have
	      booted to the panel.  If you have a dual head card you may  also
	      need  to	set  the  option CrtcNumber described above.  Default:
	      autodetected.

       Option "FPDither" "boolean"
	      Many digital flat panels (particularly  ones  on	laptops)  have
	      only  6  bits per component color resolution.  This option tells
	      the driver to dither from 8 bits per component to 6  before  the
	      flat panel truncates it.	Default: off.

       Option "FPScale" "boolean"
	      Supported only on GeForce4 and newer chips, this option tells to
	      the driver to scale lower resolutions up	to  the	 flat  panel's
	      native resolution.  Default: on.

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
	      Rotate  the display clockwise or counterclockwise.  This mode is
	      unaccelerated.  Default: no rotation.

	      Note: The Resize and Rotate extension will be  disabled  if  the
	      Rotate "CW" or Rotate "CCW" options are used.

       Option "Rotate" "RandR"
	      Enable rotation of the screen using the Resize and Rotate exten‐
	      sion.  This mode is unaccelerated.  Default:  no	rotation  sup‐
	      port.

       Option "ShadowFB" "boolean"
	      Enable or disable use of the shadow framebuffer layer.  Default:
	      off.

       The following driver Options are available for G80 and higher:

       Option "HWCursor" "boolean"
	      Enable or disable the hardware cursor.  Default: on.

       Option "NoAccel" "boolean"
	      Disable  or  enable  acceleration.   Default:  acceleration   is
	      enabled.

       Option "AccelMethod" "string"
	      Choose acceleration architecture, either "XAA" or "EXA".	XAA is
	      the old but stable architecture.	 EXA  is  newer	 and  supports
	      resizing	the desktop larger than it started out with RandR 1.2.
	      If you choose to use EXA, you might also consider setting Option
	      "MigrationHeuristic"  "greedy" to improve performance.  Default:
	      XAA.

       Option "FPDither" "boolean"
	      Enable or disable flat panel dithering  by  default.   Dithering
	      can  also	 be  enabled  or disabled using the RandR 1.2 "dither"
	      output property.	Default: off.

       Option "AllowDualLinkModes" "boolean"
	      Allow validation of dual-link DVI modes.	Not all GPUs are  con‐
	      figured  at  boot	 time to be able to handle dual-link modes, so
	      they are disabled by default.

       The following RandR 1.2 properties are available for flat panels on G80
       and higher GPUs:

       dither Enable  or disable flat panel dithering.	Valid values: 0 (off),
	      1 (on).

       scale  Control how the image is scaled to fit  the  flat	 panel.	  Note
	      that some flat panels perform their own scaling, overriding this
	      option.  "off" is not  valid  for	 laptop	 flat  panels  (LVDS).
	      Valid  values:  "off", "aspect", "fill", and "center".  Default:
	      "aspect".

SEE ALSO
       Xorg(1), xorg.conf(5), Xserver(1), X(7), xrandr(1)

AUTHORS
       Authors include: David McKay, Jarno Paananen, Chas Inman, Dave Schmenk,
       Mark Vojkovich, Aaron Plattner

COPYRIGHT
       Copyright (c) 2003 - 2008 NVIDIA, Corporation

       Permission is hereby granted, free of charge, to any person obtaining a
       copy of this software and associated documentation  files  (the	"Soft‐
       ware"),	to deal in the Software without restriction, including without
       limitation the rights to use, copy, modify, merge, publish, distribute,
       sublicense,  and/or  sell copies of the Software, and to permit persons
       to whom the Software is furnished to do so, subject  to	the  following
       conditions:

       The above copyright notice and this permission notice shall be included
       in all copies or substantial portions of the Software.

       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
       OR  IMPLIED,  INCLUDING	BUT  NOT  LIMITED  TO  THE  WARRANTIES OF MER‐
       CHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN
       NO  EVENT  SHALL	 THE  AUTHORS  OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY
       CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN	 ACTION	 OF  CONTRACT,
       TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFT‐
       WARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

X Version 11		     xf86-video-nv 2.1.12			 NV(4)
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