• NAME
  
  nv - NVIDIA video driver
• SYNOPSIS
  

  
   "Section qDeviceq"
     Identifier \*q  devname q
       Driver \*qnv\*q   ...
  
  
    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 \*qHWCursor\*q \*q boolean q

  Enable or disable the HW cursor.  Default: on.
  

  Option \*qNoAccel\*q \*q boolean q

  Disable or enable acceleration.  Default: acceleration is enabled.
  

  Option \*qUseFBDev\*q \*q boolean q

  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 \*qCrtcNumber\*q \*q integer q

  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 \*qDualhead\*q \*q boolean q

  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 \*qFlatPanel\*q \*q boolean q

  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 \*qFPDither\*q \*q boolean q

  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 \*qFPScale\*q \*q boolean q

  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 \*qRotate\*q \*qCW\*q

  Option \*qRotate\*q \*qCCW\*q

  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 \*qRotate\*q \*qRandR\*q

  Enable rotation of the screen using the Resize and Rotate extension.
  This mode is unaccelerated.
  Default: no rotation support.
  

  Option \*qShadowFB\*q \*q boolean q

  Enable or disable use of the shadow framebuffer layer.  Default: off.
  .
  
  
  
  
  The following driver
  Options are available for G80 and higher:
  

  Option \*qHWCursor\*q \*q boolean q

  Enable or disable the hardware cursor.  Default: on.
  

  Option \*qNoAccel\*q \*q boolean q

  Disable or enable acceleration.  Default: acceleration is enabled.
  

  Option \*qAccelMethod\*q \*q string q

  Choose acceleration architecture, either qXAAq or qEXAq.
  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 qMigrationHeuristicq qgreedyq to improve performance.
  Default: XAA.
  

  Option \*qFPDither\*q \*q boolean q

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

  Option \*qAllowDualLinkModes\*q \*q boolean q

  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.
  is not valid for laptop flat panels (LVDS).
  Valid values:
  Default:
  
  .
  

• 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
  "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.
  

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