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tde-guidance/displayconfig/driver-options.txt

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Added KDE3 version of KDE Guidance utilities git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kde-guidance@1102646 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
15 years ago
Driver options:
===================
This document contains driver specific options for Xorg and XFree86 and what
effect they are meant to have. These options are only valid in conjuntion with
the specified driver and generally have no meaning / effect when used with
other graphics drivers.
o fbdev
o fglrx (binary ATi driver)
o i740
o i810
o mga
o nv
o nvidia
o radeon
o sis
o vesa
Driver fbdev:
--------------
(source: man fbdev)
Option "fbdev" "string"
The framebuffer device to use. Default: /dev/fb0.
Option "ShadowFB" "boolean"
Enable or disable use of the shadow framebuffer layer. Default: on.
Option "Rotate" "string"
Enable rotation of the display. The supported values are "CW" (clock‐
wise, 90 degrees), "UD" (upside down, 180 degrees) and "CCW" (counter
clockwise, 270 degrees). Implies use of the shadow framebuffer layer.
Default: off.
Driver fglrx (ATi binary driver):
----------------------------------
Section "Device"
Identifier "Radeon 9600XT - fglrx"
Driver "fglrx"
# ### generic DRI settings ###
# === disable PnP Monitor ===
#Option "NoDDC"
# === disable/enable XAA/DRI ===
Option "no_accel" "no"
Option "no_dri" "no"
# === misc DRI settings ===
Option "mtrr" "off" # disable DRI mtrr mapper, driver has its own code for mtrr
# ### FireGL DDX driver module specific settings ###
# === Screen Management ===
Option "DesktopSetup" "0x00000000"
Option "MonitorLayout" "AUTO, AUTO"
Option "IgnoreEDID" "off"
Option "HSync2" ""
Option "VRefresh2" ""
Option "ScreenOverlap" "0"
# === TV-out Management ===
Option "NoTV" "yes"
Option "TVStandard" "NTSC-M"
Option "TVHSizeAdj" "0"
Option "TVVSizeAdj" "0"
Option "TVHPosAdj" "0"
Option "TVVPosAdj" "0"
Option "TVHStartAdj" "0"
Option "TVColorAdj" "0"
Option "GammaCorrectionI" "0x00000000"
Option "GammaCorrectionII" "0x00000000"
# === OpenGL specific profiles/settings ===
Option "Capabilities" "0x00000000"
# === Video Overlay for the Xv extension ===
Option "VideoOverlay" "on"
# === OpenGL Overlay ===
# Note: When OpenGL Overlay is enabled, Video Overlay
# will be disabled automatically
Option "OpenGLOverlay" "off"
# === Center Mode (Laptops only) ===
Option "CenterMode" "off"
# === Pseudo Color Visuals (8-bit visuals) ===
Option "PseudoColorVisuals" "off"
# === QBS Management ===
Option "Stereo" "off"
Option "StereoSyncEnable" "1"
# === FSAA Management ===
Option "FSAAEnable" "yes"
Option "FSAAScale" "4"
Option "FSAADisableGamma" "no"
Option "FSAACustomizeMSPos" "no"
Option "FSAAMSPosX0" "0.000000"
Option "FSAAMSPosY0" "0.000000"
Option "FSAAMSPosX1" "0.000000"
Option "FSAAMSPosY1" "0.000000"
Option "FSAAMSPosX2" "0.000000"
Option "FSAAMSPosY2" "0.000000"
Option "FSAAMSPosX3" "0.000000"
Option "FSAAMSPosY3" "0.000000"
Option "FSAAMSPosX4" "0.000000"
Option "FSAAMSPosY4" "0.000000"
Option "FSAAMSPosX5" "0.000000"
Option "FSAAMSPosY5" "0.000000"
# === Misc Options ===
Option "UseFastTLS" "0"
Option "BlockSignalsOnLock" "on"
Option "UseInternalAGPGART" "yes"
Option "ForceGenericCPU" "no"
BusID "PCI:1:0:0" # vendor=1002, device=4152
Screen 0
EndSection
Driver i740:
-------------
(No info yet)
Driver i810:
-------------
Option "NoAccel" "boolean"
Disable or enable acceleration. Default: acceleration is enabled.
Option "SWCursor" "boolean"
Disable or enable software cursor. Default: software cursor is dis‐
able and a hardware cursor is used for configurations where the
hardware cursor is available.
Option "ColorKey" "integer"
This sets the default pixel value for the YUV video overlay key.
Default: undefined.
Option "CacheLines" "integer"
This allows the user to change the amount of graphics memory used for
2D acceleration and video. Decreasing this amount leaves more for 3D
textures. Increasing it can improve 2D performance at the expense of
3D performance. Default: depends on the resolution, depth, and
available video memory. The driver attempts to allocate at least
enough to hold two DVD-sized YUV buffers by default. The default
used for a specific configuration can be found by examining the Xorg
log file.
Option "DRI" "boolean"
Disable or enable DRI support. Default: DRI is enabled for configu‐
rations where it is supported.
The following driver Options are supported for the i810 and i815 chipsets:
Option "DDC" "boolean"
Disable or enable DDC support. Default: enabled.
Option "Dac6Bit" "boolean"
Enable or disable 6-bits per RGB for 8-bit modes. Default: 8-bits
per RGB for 8-bit modes.
Option "XvMCSurfaces" "integer"
This option enables XvMC. The integer parameter specifies the number
of surfaces to use. Valid values are 6 and 7. Default: XvMC is dis‐
abled.
The following driver Options are supported for the 830M and later chipsets:
Option "VBERestore" "boolean"
Enable or disable the use of VBE save/restore for saving and restor‐
ing the initial text mode. This is disabled by default because it
causes lockups on some platforms. However, there are some cases
where it must enabled for the correct restoration of the initial
video mode. If you are having a problem with that, try enabling this
option. Default: Disabled.
Option "VideoKey" "integer"
This is the same as the "ColorKey" option described above. It is
provided for compatibility with most other drivers.
Option "XVideo" "boolean"
Disable or enable XVideo support. Default: XVideo is enabled for
configurations where it is supported.
Option "MonitorLayout" "anystr"
Allow different monitor configurations. e.g. "CRT,LFP" will configure
a CRT on Pipe A and an LFP on Pipe B. Regardless of the primary
heads’ pipe it is always configured as "<PIPEA>,<PIPEB>". Addition‐
ally you can add different configurations such as "CRT+DFP,LFP" which
would put a digital flat panel and a CRT on pipe A, and a local flat
panel on pipe B. For single pipe configurations you can just specify
the monitors types on Pipe A, such as "CRT+DFP" which will enable the
CRT and DFP on Pipe A. Valid monitors are CRT, LFP, DFP, TV, CRT2,
LFP2, DFP2, TV2 and NONE. NOTE: Some configurations of monitor types
may fail, this depends on the Video BIOS and system configuration.
Default: Not configured, and will use the current head’s pipe and
monitor.
Option "Clone" "boolean"
Enable Clone mode on pipe B. This will setup the second head as a
complete mirror of the monitor attached to pipe A. NOTE: Video over‐
lay functions will not work on the second head in this mode. If you
require this, then use the MonitorLayout above and do (as an example)
"CRT+DFP,NONE" to configure both a CRT and DFP on Pipe A to achieve
local mirroring and disable the use of this option. Default: Clone
mode on pipe B is disabled.
Option "CloneRefresh" "integer"
When the Clone option is specified we can drive the second monitor at
a different refresh rate than the primary. Default: 60Hz.
Option "CheckLid" "boolean"
On mobile platforms it’s desirable to monitor the lid status and
switch the outputs accordingly when the lid is opened or closed. By
default this option is on, but may incur a very minor performance
penalty as we need to poll a register on the card to check for this
activity. It can be turned off using this option. This only works
with the 830M, 852GM and 855GM systems. Default: enabled.
Option "FlipPrimary" "boolean"
When using a dual pipe system, it may be preferable to switch the
primary screen to the alternate pipe to display on the other monitor
connection. NOTE: Using this option may cause text mode to be
restored incorrectly, and thus should be used with caution. Default:
disabled.
Option "DisplayInfo" "boolean"
It has been found that a certain BIOS call can lockup the Xserver
because of a problem in the Video BIOS. The log file will identify if
you are suffering from this problem and tell you to turn this option
off. Default: enabled
Option "DevicePresence" "boolean"
Tell the driver to perform an active detect of the currently con‐
nected monitors. This option is useful if the monitor was not con‐
nected when the machine has booted, but unfortunately it doesn’t
always work and is extremely dependent upon the Video BIOS. Default:
disabled
Driver mga:
------------
Option "ColorKey" "integer"
Set the colormap index used for the transparency key for the depth 8
plane when operating in 8+24 overlay mode. The value must be in the
range 2-255. Default: 255.
Option "HWCursor" "boolean"
Enable or disable the HW cursor. Default: on.
Option "MGASDRAM" "boolean"
Specify whether G100, G200 or G400 cards have SDRAM. The driver
attempts to auto-detect this based on the card’s PCI subsystem ID.
This option may be used to override that auto-detection. The mga
driver is not able to auto-detect the presence of of SDRAM on sec‐
ondary heads in multihead configurations so this option will often
need to be specified in multihead configurations. Default:
auto-detected.
Option "NoAccel" "boolean"
Disable or enable acceleration. Default: acceleration is enabled.
Option "NoHal" "boolean"
Disable or enable loading the "mga_hal" module. Default: the module
is loaded when available and when using hardware that it supports.
Option "OverclockMem"
Set clocks to values used by some commercial X Servers (G100, G200
and G400 only). Default: off.
Option "Overlay" "value"
Enable 8+24 overlay mode. Only appropriate for depth 24. Recognized
values are: "8,24", "24,8". Default: off. (Note: the G100 is unac‐
celerated in the 8+24 overlay mode due to a missing hardware fea‐
ture.)
Option "PciRetry" "boolean"
Enable or disable PCI retries. Default: off.
Option "Rotate" "CW"
Option "Rotate" "CCW"
Rotate the display clockwise or counterclockwise. This mode is unac‐
celerated. Default: no rotation.
Option "ShadowFB" "boolean"
Enable or disable use of the shadow framebuffer layer. Default: off.
Option "SyncOnGreen" "boolean"
Enable or disable combining the sync signals with the green signal.
Default: off.
Option "UseFBDev" "boolean"
Enable or disable use of on OS-specific fb interface (and is not sup‐
ported on all OSs). See fbdevhw(4x) for further information.
Default: off.
Option "VideoKey" "integer"
This sets the default pixel value for the YUV video overlay key.
Default: undefined.
Option "TexturedVideo" "boolean"
This has XvImage support use the texture engine rather than the video
overlay. This option is only supported by G200 and later chips, and
only at 16 and 32 bits per pixel. Default: off.
Driver nv:
-----------
(source: man nv)
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 on OS-specific fb interface (and is not sup-
ported on all OSs). See fbdevhw(4x) for further information.
Default: off.
Option "CrtcNumber" "integer"
GeForce2 MX, nForce2, Quadro4, GeForce4, Quadro FX and GeForce FX may
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 "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 only work if it was
POSTed by the BIOS, that is, the machine 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: off.
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. This is only supported in depth 24 on GeForce2 MX, nForce2,
GeForce4, Quadro4, Geforce FX and Quadro FX. Default: off.
Option "FPScale" "boolean"
Supported only on GeForce4, Quadro4, Geforce FX and Quadro FX. 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 unac-
celerated. Default: no rotation.
Note: The Resize and Rotate extension will be disabled if the Rotate
option is used.
Option "ShadowFB" "boolean"
Enable or disable use of the shadow framebuffer layer. Default: off.
Driver nvidia.ko (binary driver):
----------------------------------
(source: ftp://download.nvidia.com/XFree86/Linux-x86/1.0-7174/README.txt)
Option "NvAGP" "integer"
Configure AGP support. Integer argument can be one of:
0 : disable agp
1 : use NVIDIA's internal AGP support, if possible
2 : use AGPGART, if possible
3 : use any agp support (try AGPGART, then NVIDIA's AGP)
Please note that NVIDIA's internal AGP support cannot
work if AGPGART is either statically compiled into your
kernel or is built as a module, but loaded into your
kernel (some distributions load AGPGART into the kernel
at boot up). Default: 3 (the default was 1 until after
1.0-1251).
Option "NoLogo" "boolean"
Disable drawing of the NVIDIA logo splash screen at
X startup. Default: the logo is drawn.
Option "RenderAccel" "boolean"
Enable or disable hardware acceleration of the RENDER
extension. THIS OPTION IS EXPERIMENTAL. ENABLE IT AT YOUR
OWN RISK. There is no correctness test suite for the
RENDER extension so NVIDIA can not verify that RENDER
acceleration works correctly. Default: hardware
acceleration of the RENDER extension is disabled.
Option "NoRenderExtension" "boolean"
Disable the RENDER extension. Other than recompiling
the X-server, XFree86 does not seem to have another way of
disabling this. Fortunatly, we can control this from the
driver so we export this option. This is useful in depth
8 where RENDER would normally steal most of the default
colormap. Default: RENDER is offered when possible.
Option "UBB" "boolean"
Enable or disable Unified Back Buffer on any Quadro
based GPUs (Quadro4 NVS excluded); please see
Appendix M for a description of UBB. This option has
no affect on non-Quadro chipsets. Default: UBB is on
for Quadro chipsets.
Option "NoFlip" "boolean"
Disable OpenGL flipping; please see Appendix M for
a description. Default: OpenGL will swap by flipping
when possible.
Option "DigitalVibrance" "integer"
Enables Digital Vibrance Control. The range of valid
values are 0 through 255. This feature is not available
on products older than GeForce2. Default: 0.
Option "Dac8Bit" "boolean"
Most Quadro parts by default use a 10 bit color look
up table (LUT) by default; setting this option to TRUE forces
these graphics chips to use an 8 bit (LUT). Default:
a 10 bit LUT is used, when available.
Option "Overlay" "boolean"
Enables RGB workstation overlay visuals. This is only
supported on Quadro4 and Quadro FX chips (Quadro4 NVS
excluded) in depth 24. This option causes the server to
advertise the SERVER_OVERLAY_VISUALS root window property
and GLX will report single and double buffered, Z-buffered
16 bit overlay visuals. The transparency key is pixel
0x0000 (hex). There is no gamma correction support in
the overlay plane. This feature requires XFree86 version
4.1.0 or newer (or the Xorg X server). NV17/18 based
Quadros (ie. 500/550 XGL) have additional restrictions,
namely, overlays are not supported in TwinView mode
or with virtual desktops larger than 2046x2047 in any
dimension (eg. it will not work in 2048x1536 modes).
Quadro 7xx/9xx and Quadro FX will offer overlay visuals
in these modes (TwinView, or virtual desktops larger
than 2046x2047), but the overlay will be emulated with
a substantial performance penalty. RGB workstation
overlays are not supported when the Composite extension is
enabled. Default: off.
Option "CIOverlay" "boolean"
Enables Color Index workstation overlay visuals with
identical restrictions to Option "Overlay" above.
The server will offer visuals both with and without a
transparency key. These are depth 8 PseudoColor visuals.
Enabling Color Index overlays on X servers older than
XFree86 4.3 will force the RENDER extension to be disabled
due to bugs in the RENDER extension in older X servers.
Color Index workstation overlays are not supported when the
Composite extension is enabled. Default: off.
Option "TransparentIndex" "integer"
When color index overlays are enabled, use this option
to choose which pixel is used for the transparent pixel
in visuals featuring transparent pixels. This value
is clamped between 0 and 255 (Note: some applications
such as Alias's Maya require this to be zero
in order to work correctly). Default: 0.
Option "OverlayDefaultVisual" "boolean"
When overlays are used, this option sets the default
visual to an overlay visual thereby putting the root
window in the overlay. This option is not recommended
for RGB overlays. Default: off.
Option "RandRRotation" "boolean"
Enable rotation support for the XRandR extension. This
allows use of the XRandR X server extension for
configuring the screen orientation through rotation.
This feature is supported on GeForce2 or better hardware
using depth 24. This requires an XOrg 6.8.1 or newer
X server. This feature does not work with hardware overlays,
emulated overlays will be used instead at a substantial
performance penalty. See APPENDIX W for details.
Default: off.
Option "SWCursor" "boolean"
Enable or disable software rendering of the X cursor.
Default: off.
Option "HWCursor" "boolean"
Enable or disable hardware rendering of the X cursor.
Default: on.
Option "CursorShadow" "boolean" Enable or disable use of a
shadow with the hardware accelerated cursor; this is a
black translucent replica of your cursor shape at a
given offset from the real cursor. This option is
only available on GeForce2 or better hardware (ie
everything but TNT/TNT2, GeForce 256, GeForce DDR and
Quadro). Default: no cursor shadow.
Option "CursorShadowAlpha" "integer"
The alpha value to use for the cursor shadow; only
applicable if CursorShadow is enabled. This value must
be in the range [0, 255] -- 0 is completely transparent;
255 is completely opaque. Default: 64.
Option "CursorShadowXOffset" "integer"
The offset, in pixels, that the shadow image will be
shifted to the right from the real cursor image; only
applicable if CursorShadow is enabled. This value must
be in the range [0, 32]. Default: 4.
Option "CursorShadowYOffset" "integer"
The offset, in pixels, that the shadow image will be
shifted down from the real cursor image; only applicable
if CursorShadow is enabled. This value must be in the
range [0, 32]. Default: 2.
Option "ConnectedMonitor" "string"
Allows you to override what the NVIDIA kernel module
detects is connected to your video card. This may
be useful, for example, if you use a KVM (keyboard,
video, mouse) switch and you are switched away when
X is started. In such a situation, the NVIDIA kernel
module cannot detect what display devices are connected,
and the NVIDIA X driver assumes you have a single CRT.
Valid values for this option are "CRT" (cathode ray
tube), "DFP" (digital flat panel), or "TV" (television);
if using TwinView, this option may be a comma-separated
list of display devices; e.g.: "CRT, CRT" or "CRT, DFP".
NOTE: anything attached to a 15 pin VGA connector is
regarded by the driver as a CRT. "DFP" should only be
used to refer to flatpanels connected via a DVI port.
Default: string is NULL.
Option "UseEdidFreqs" "boolean"
This option causes the X server to use the HorizSync
and VertRefresh ranges given in a display device's EDID,
if any. EDID provided range information will override
the HorizSync and VertRefresh ranges specified in the
Monitor section. If a display device does not provide an
EDID, or the EDID does not specify an hsync or vrefresh
range, then the X server will default to the HorizSync
and VertRefresh ranges specified in the Monitor section.
Option "IgnoreEDID" "boolean"
Disable probing of EDID (Extended Display Identification
Data) from your monitor. Requested modes are compared
against values gotten from your monitor EDIDs (if any)
during mode validation. Some monitors are known to lie
about their own capabilities. Ignoring the values that
the monitor gives may help get a certain mode validated.
On the other hand, this may be dangerous if you do not
know what you are doing. Default: Use EDIDs.
Option "NoDDC" "boolean"
Synonym for "IgnoreEDID"
Option "FlatPanelProperties" "string"
Requests particular properties of any connected flat
panels as a comma-separated list of property=value pairs.
Currently, the only two available properties are 'Scaling'
and 'Dithering'. The possible values for 'Scaling' are:
'default' (the driver will use whatever scaling state
is current), 'native' (the driver will use the flat
panel's scaler, if it has one), 'scaled' (the driver
will use the NVIDIA scaler, if possible), 'centered'
(the driver will center the image, if possible),
and 'aspect-scaled' (the driver will scale with the
NVIDIA scaler, but keep the aspect ratio correct).
The possible values for 'Dithering' are: 'default'
(the driver will decide when to dither), 'enabled' (the
driver will always dither when possible), and 'disabled'
(the driver will never dither). If any property is not
specified, it's value shall be 'default'. An example
properties string might look like:
"Scaling = centered, Dithering = enabled"
Option "UseInt10Module" "boolean"
Enable use of the X Int10 module to soft-boot all
secondary cards, rather than POSTing the cards through
the NVIDIA kernel module. Default: off (POSTing is done
through the NVIDIA kernel module).
Option "TwinView" "boolean"
Enable or disable TwinView. Please see APPENDIX I for
details. Default: TwinView is disabled.
Option "TwinViewOrientation" "string"
Controls the relationship between the two display devices
when using TwinView. Takes one of the following values:
"RightOf" "LeftOf" "Above" "Below" "Clone". Please see
APPENDIX I for details. Default: string is NULL.
Option "SecondMonitorHorizSync" "range(s)"
This option is like the HorizSync entry in the Monitor
section, but is for the second monitor when using
TwinView. Please see APPENDIX I for details. Default:
none.
Option "SecondMonitorVertRefresh" "range(s)"
This option is like the VertRefresh entry in the Monitor
section, but is for the second monitor when using
TwinView. Please see APPENDIX I for details. Default:
none.
Option "MetaModes" "string"
This option describes the combination of modes to use
on each monitor when using TwinView. Please see APPENDIX
I for details. Default: string is NULL.
Option "NoTwinViewXineramaInfo" "boolean"
When in TwinView, the NVIDIA X driver normally provides
a Xinerama extension that X clients (such as window
managers) can use to to discover the current TwinView
configuration. Some window mangers can get confused by
this information, so this option is provided to disable
this behavior. Default: TwinView Xinerama information
is provided.
Option "TVStandard" "string"
Please see (app-j) APPENDIX J: CONFIGURING TV-OUT.
Option "TVOutFormat" "string"
Please see (app-j) APPENDIX J: CONFIGURING TV-OUT.
Option "TVOverScan" "Decimal value in the range 0.0 to 1.0"
Valid values are in the range 0.0 through 1.0; please see
(app-j) APPENDIX J: CONFIGURING TV-OUT.
Option "Stereo" "integer"
Enable offering of quad-buffered stereo visuals on Quadro.
Integer indicates the type of stereo glasses being used:
1 - DDC glasses. The sync signal is sent to the glasses
via the DDC signal to the monitor. These usually
involve a passthrough cable between the monitor and
video card.
2 - "Blueline" glasses. These usually involve
a passthrough cable between the monitor and video
card. The glasses know which eye to display based
on the length of a blue line visible at the bottom
of the screen. When in this mode, the root window
dimensions are one pixel shorter in the Y dimension
than requested. This mode does not work with virtual
root window sizes larger than the visible root window
size (desktop panning).
3 - Onboard stereo support. This is usually only found
on professional cards. The glasses connect via a
DIN connector on the back of the video card.
4 - TwinView clone mode stereo (aka "passive" stereo).
On video cards that support TwinView, the left eye
is displayed on the first display, and the right
eye is displayed on the second display. This is
normally used in conjuction with special projectors
to produce 2 polarized images which are then viewed
with polarized glasses. To use this stereo mode,
you must also configure TwinView in clone mode with
the same resolution, panning offset, and panning
domains on each display.
Stereo is only available on Quadro cards. Stereo
options 1, 2, and 3 (aka "active" stereo) may be used
with TwinView if all modes within each metamode have
identical timing values. Please see (app-l) APPENDIX
L: PROGRAMMING MODES for suggestions on making sure the
modes within your metamodes are identical. The identical
modeline requirement is not necessary for Stereo option 4
("passive" stereo). Currently, stereo operation may
be "quirky" on the original Quadro (NV10) chip and
left-right flipping may be erratic. We are trying
to resolve this issue for a future release. Default:
Stereo is not enabled.
Stereo options 1, 2, and 3 (aka "active" stereo) are not
supported on Digital Flatpanels.
Option "AllowDFPStereo" "boolean"
By default, the NVIDIA X driver performs a check which
disables active stereo (stereo options 1, 2, and 3)
if the X screen is driving a DFP. The "AllowDFPStereo"
option bypasses this check.
Option "NoBandWidthTest" "boolean"
As part of mode validation, the X driver tests if a
given mode fits within the hardware's memory bandwidth
constraints. This option disables this test. Default:
the memory bandwidth test is performed.
Option "IgnoreDisplayDevices" "string"
This option tells the NVIDIA kernel module to completely
ignore the indicated classes of display devices when
checking what display devices are connected. You may
specify a comma-separated list containing any of "CRT",
"DFP", and "TV".
For example:
Option "IgnoreDisplayDevices" "DFP, TV"
will cause the NVIDIA driver to not attempt to detect
if any flatpanels or TVs are connected.
This option is not normally necessary; however, some video
BIOSes contain incorrect information about what display
devices may be connected, or what i2c port should be
used for detection. These errors can cause long delays
in starting X. If you are experiencing such delays, you
may be able to avoid this by telling the NVIDIA driver to
ignore display devices which you know are not connected.
NOTE: anything attached to a 15 pin VGA connector is
regarded by the driver as a CRT. "DFP" should only be
used to refer to flatpanels connected via a DVI port.
Option "MultisampleCompatibility" "boolean"
Enable or disable the use of separate front and back
multisample buffers. This will consume more memory
but is necessary for correct output when rendering to
both the front and back buffers of a multisample or
FSAA drawable. This option is necessary for correct
operation of SoftImage XSI. Default: a singlemultisample
buffer is shared between the front and back buffers.
Option "NoPowerConnectorCheck" "boolean"
The NVIDIA X driver will abort X server initialization
if it detects that a GPU that requires an external power
connector does not have an external power connector
plugged in. This option can be used to bypass this test.
Default: the power connector test is performed.
Option "XvmcUsesTextures" "boolean"
Forces XvMC to use the 3D engine for XvMCPutSurface
requests rather than the video overlay. Default: video
overlay is used when available.
Option "AllowGLXWithComposite" "boolean"
Enables GLX even when the Composite X extension is loaded.
ENABLE AT YOUR OWN RISK. OpenGL applications will not
display correctly in many circumstances with this setting
enabled. Default: GLX is disabled when Composite is
loaded.
Option "ExactModeTimingsDVI" "boolean"
Forces the initialization of the X server with the exact
timings specified in the ModeLine. Default: For DVI
devices, the X server inilializes with the closest mode in
the EDID list.
Driver radeon:
---------------
(source: manpage radeon)
Option "SWcursor" "boolean"
Selects software cursor. The default is off.
Option "NoAccel" "boolean"
Enables or disables all hardware acceleration.
The default is to enable hardware acceleration.
Option "Dac6Bit" "boolean"
Enables or disables the use of 6 bits per color component when in 8
bpp mode (emulates VGA mode). By default, all 8 bits per color com-
ponent are used.
The default is off.
Option "VideoKey" "integer"
This overrides the default pixel value for the YUV video overlay key.
The default value is 0x1E.
Option "UseFBDev" "boolean"
Enable or disable use of an OS-specific framebuffer device interface
(which is not supported on all OSs). MergedFB does not work when
this option is in use. See fbdevhw(4x) for further information.
The default is off.
Option "AGPMode" "integer"
Set AGP data transfer rate. (used only when DRI is enabled)
1 -- x1 (default)
2 -- x2
4 -- x4
others -- invalid
Option "AGPFastWrite" "boolean"
Enable AGP fast write.
(used only when DRI is enabled)
The default is off.
Option "BusType" "string"
Used to replace previous ForcePCIMode option. Should only be used
when driver’s bus detection is incorrect or you want to force a AGP
card to PCI mode. Should NEVER force a PCI card to AGP bus.
PCI -- PCI bus
AGP -- AGP bus
PCIE -- PCI Express (falls back to PCI at present)
(used only when DRI is enabled)
The default is auto detect.
Option "DDCMode" "boolean"
Force to use the modes queried from the connected monitor.
The default is off.
Option "DisplayPriority" "string"
Used to prevent flickering or tearing problem caused by display
buffer underflow.
AUTO -- Driver calculated (default).
BIOS -- Remain unchanged from BIOS setting.
Use this if the calculation is not correct
for your card.
HIGH -- Force to the highest priority.
Use this if you have problem with above options.
This may affect performence slightly.
The default value is AUTO.
Option "MonitorLayout" "string"
This option is used to overwrite the detected monitor types. This is
only required when driver makes a false detection. The possible mon-
itor types are:
NONE -- Not connected
CRT -- Analog CRT monitor
TMDS -- Desktop flat panel
LVDS -- Laptop flat panel
This option can be used in following format:
Option "MonitorLayout" "[type on primary], [type on secondary]"
For example, Option "MonitorLayout" "CRT, TMDS"
Primary/Secondary head for dual-head cards:
(when only one port is used, it will be treated as the primary
regardless)
Primary head:
DVI port on DVI+VGA cards
LCD output on laptops
Internal TMDS port on DVI+DVI cards
Secondary head:
VGA port on DVI+VGA cards
VGA port on laptops
External TMDS port on DVI+DVI cards
The default value is undefined.
Option "MergedFB" "boolean"
This enables merged framebuffer mode. In this mode you have a single
shared framebuffer with two viewports looking into it. It is similar
to Xinerama, but has some advantages. It is faster than Xinerama,
the DRI works on both heads, and it supports clone modes.
Merged framebuffer mode provides two linked viewports looking into a
single large shared framebuffer. The size of the framebuffer is
determined by the Virtual keyword defined on the Screen section of
your XF86Config file. It works just like regular virtual desktop
except you have two viewports looking into it instead of one.
For example, if you wanted a desktop composed of two 1024x768 view-
ports looking into a single desktop you would create a virtual desk-
top of 2048x768 (left/right) or 1024x1536 (above/below), e.g.,
Virtual 2048 768 or Virtual 1024 1536
The virtual desktop can be larger than larger than the size of the
viewports looking into it. In this case the linked viewports will
scroll around in the virtual desktop. Viewports with different sizes
are also supported (e.g., one that is 1024x768 and one that is
640x480). In this case the smaller viewport will scroll relative to
the larger one such that none of the virtual desktop is inaccessable.
If you do not define a virtual desktop the driver will create one
based on the orientation of the heads and size of the largest defined
mode in the display section that is supported on each head.
The relation of the viewports in specified by the CRT2Position
Option. The options are Clone , LeftOf , RightOf , Above , and
Below. MergedFB is enabled by default if a monitor is detected on
each output. If no position is given it defaults to clone mode (the
old clone options are now deprecated, also, the option OverlayOnCRTC2
has been replaced by the Xv attribute XV_SWITCHCRT; the overlay can
be switched to CRT1 or CRT2 on the fly in clone mode).
The maximum framebuffer size that the 2D acceleration engine can han-
dle is 8192x8192. The maximum framebuffer size that the 3D engine
can handle is 2048x2048.
Note: Page flipping does not work well in certain configurations with
MergedFB. If you see rendering errors or other strange behavior,
disable page flipping. Also MergedFB is not compatible with the UseF-
BDev option.
The default value is undefined.
Option "CRT2HSync" "string"
Set the horizontal sync range for the secondary monitor. It is not
required if a DDC-capable monitor is connected.
For example, Option "CRT2HSync" "30.0-86.0"
The default value is undefined.
Option "CRT2VRefresh" "string"
Set the vertical refresh range for the secondary monitor. It is not
required if a DDC-capable monitor is connected.
For example, Option "CRT2VRefresh" "50.0-120.0"
The default value is undefined.
Option "CRT2Position" "string"
Set the relationship of CRT2 relative to CRT1. Valid options are:
Clone , LeftOf , RightOf , Above , and Below
For example, Option "CRT2Position" "RightOf"
The default value is Clone.
Option "MetaModes" "string"
MetaModes are mode combinations for CRT1 and CRT2. If you are using
merged frame buffer mode and want to change modes (CTRL-ALT-+/-),
these define which modes will be switched to on CRT1 and CRT2. The
MetaModes are defined as CRT1Mode-CRT2Mode (800x600-1024x768). Modes
listed individually (800x600) define clone modes, that way you can
mix clone modes with non-clone modes. Also some programs require
"standard" modes.
Note: Any mode you use in the MetaModes must be defined in the
Screen section of your XF86Config file. Modes not defined there will
be ignored when the MetaModes are parsed since the driver uses them
to make sure the monitors can handle those modes. If you do not
define a MetaMode the driver will create one based on the orientation
of the heads and size of the largest defined mode in the display sec-
tion that is supported on each head.
Modes 1024x768 800x600 640x480
For example, Option "MetaModes" "1024x768-1024x768 800x600-1024x768
640x480-800x600 800x600"
The default value is undefined.
Option "OverlayOnCRTC2" "boolean"
Force hardware overlay to clone head.
The default value is off.
Option "NoMergedXinerama" "boolean"
Since merged framebuffer mode does not use Xinerama, apps are not
able to intelligently place windows. Merged framebuffer mode pro-
vides its own pseudo-Xinerama. This allows Xinerama compliant appli-
cations to place windows appropriately. There are some caveats.
Since merged framebuffer mode is able to change relative screen sizes
and orientations on the fly, as well has having overlapping view-
ports, pseudo-Xinerama, might not always provide the right hints.
Also many Xinerama compliant applications only query Xinerama once at
startup; if the information changes, they may not be aware of the
change. If you are already using Xinerama (e.g., a single head card
and a dualhead card providing three heads), pseudo-Xinerama will be
disabled.
This option allows you turn off the driver provided pseudo-Xinerama
extension.
The default value is FALSE.
Option "MergedXineramaCRT2IsScreen0" "boolean"
By default the pseudo-Xinerama provided by the driver makes the left-
most or bottom head Xinerama screen 0. Certain Xinerama-aware appli-
cations do special things with screen 0. To change that behavior,
use this option.
The default value is undefined.
Option "MergedDPI" "string"
The driver will attempt to figure out an appropriate DPI based on the
DDC information and the orientation of the heads when in merged
framebuffer mode. If this value does not suit you, you can manually
set the DPI using this option.
For example, Option "MergedDPI" "100 100"
The default value is undefined.
Option "IgnoreEDID" "boolean"
Do not use EDID data for mode validation, but DDC is still used for
monitor detection. This is different from NoDDC option.
The default value is off.
Option "PanelSize" "string"
Should only be used when driver cannot detect the correct panel size.
Apply to both desktop (TMDS) and laptop (LVDS) digital panels. When
a valid panel size is specified, the timings collected from DDC and
BIOS will not be used. If you have a panel with timings different
from that of a standard VESA mode, you have to provide this informa-
tion through the Modeline.
For example, Option "PanelSize" "1400x1050"
The default value is none.
Option "PanelOff" "boolean"
Disable panel output.
The default value is off.
Option "EnablePageFlip" "boolean"
Enable page flipping for 3D acceleration. This will increase perfor-
mance but not work correctly in some rare cases, hence the default is
off.
Note: Page flipping does not work well in certain configurations with
MergedFB. If you see rendering errors or other strange behavior,
disable page flipping.
Option "ForceMinDotClock" "frequency"
Override minimum dot clock. Some Radeon BIOSes report a minimum dot
clock unsuitable (too high) for use with television sets even when
they actually can produce lower dot clocks. If this is the case you
can override the value here. Note that using this option may damage
your hardware. You have been warned. The frequency parameter may be
specified as a float value with standard suffixes like "k", "kHz",
"M", "MHz".
Option "RenderAccel" "boolean"
Enables or disables hardware Render acceleration. This driver does
not support component alpha (subpixel) rendering. It is only sup-
ported on Radeon series up to and including 9200 (9500/9700 and newer
unsupported). The default is to enable Render acceleration.
Option "SubPixelOrder" "string"
Force subpixel order to specified order. Subpixel order is used for
subpixel decimation on flat panels.
NONE -- No subpixel (CRT like displays)
RGB -- in horizontal RGB order (most flat panels)
BGR -- in horizontal BGR order (some flat panels)
This option is intended to be used in following cases:
1. The default subpixel order is incorrect for your panel.
2. Enable subpixel decimation on analog panels.
3. Adjust to one display type in dual-head clone mode setup.
4. Get better performance with Render acceleration on digital panels
(use NONE setting).
The default is NONE for CRT, RGB for digital panels
Option "DynamicClocks" "boolean"
Enable dynamic clock scaling. The on-chip clocks will scale dynami-
cally based on usage. This can help reduce heat and increase battery
life by reducing power usage. Some users report reduced 3D prefor-
mance with this enabled. The default is off.
Driver sis:
------------
Option "NoAccel" "boolean"
Disable or enable 2D acceleration. Default: acceleration is enabled.
Option "HWCursor" "boolean"
Enable or disable the HW cursor. Default: HWCursor is on.
Option "SWCursor" "boolean"
The opposite of HWCursor. Default: SWCursor is off.
Option "Rotate" "CW"
Rotate the display clockwise. This mode is unaccelerated, and uses
the Shadow Frame Buffer layer. Using this option disables the Resize
and Rotate extension (RandR). Default: no rotation.
Option "Rotate" "CCW"
Rotate the display counterclockwise. This mode is unaccelerated, and
uses the Shadow Frame Buffer layer. Using this option disables the
Resize and Rotate extension (RandR). Default: no rotation.
Option "ShadowFB" "boolean"
Enable or disable use of the shadow framebuffer layer. Default:
Shadow framebuffer is off.
Option "CRT1Gamma" "boolean"
Enable or disable gamma correction. Default: Gamma correction is on.
Driver vesa:
-------------
(source: man vesa)
Option "ShadowFB" "boolean"
Enable or disable use of the shadow framebuffer layer. Default: on.
This option is recommended for performance reasons.