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 Direct-
       Color  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 fur-
              ther 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".

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 documenta-
       tion 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 WAR-
       RANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPY-
       RIGHT  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 2.1.15                                                 NV(4)