NV(4)							     Kernel Interfaces Manual							     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, MCP6x

       GeForce 8XXX, GeForce 9XXX, nForce 7, GeForce G, ION
			     G8x, G9x, GT21x, MCP7x

       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  connected
	      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 virtual 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 extension.  This mode is unaccelerated.  Default: no rotation support.

       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  resiz-
	      ing the desktop larger than it started out with RandR 1.2.  If you choose to use EXA, you might also consider setting Option "Migra-
	      tionHeuristic" "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 configured 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) 2003-2008,2010 NVIDIA Corporation

       Permission  is  hereby  granted,  free  of  charge, to any person obtaining a copy of this software and associated documentation files (the
       "Software"), 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
       SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

X Version 11						       xf86-video-nv 2.1.17							     NV(4)