Section "Device"
  Identifier "devname"
  Driver "nv"
  ...
EndSection
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.
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
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 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 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".
Xorg(1), xorg.conf(5), Xserver(1), X(7), xrandr(1)
Authors include: David McKay, Jarno Paananen, Chas Inman, Dave Schmenk, Mark
  Vojkovich, Aaron Plattner
Copyright (c) 2003-2008,2010 NVIDIA CorporationPermission 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
    MERCHANTABILITY, 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.