Table of Contents
nv - NVIDIA video driver
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
- GeForce 8XXX, GeForce 9XXX
- G80, G84, G86,
G92, G94, G96, G98
- 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 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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