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man : nv(4)
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 fol-
lowing 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
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NV(4) NV(4)
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: accelera-
tion is enabled.
Option "UseFBDev" "boolean"
Enable or disable use of an OS-specific fb inter-
face (and is not supported on all OSs). See fbde-
vhw(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 lap-
tops) have only 6 bits per component color resolu-
tion. This option tells the driver to dither from
8 bits per component to 6 before the flat panel
truncates it. Default: off.
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Option "FPScale" "boolean"
Supported only on GeForce4 and newer chips, this
option tells to the driver to scale lower resolu-
tions 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 dis-
abled 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: accelera-
tion 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 han-
dle dual-link modes, so they are disabled by
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NV(4) NV(4)
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 val-
ues: 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), xorgconfig(1), 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 per-
son obtaining a copy of this software and associated docu-
mentation 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, DAM-
AGES 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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