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mga - Matrox video driver
mga is an XFree86 driver for Matrox video cards. The driver
is fully accelerated, and provides support for the following framebuffer
depths: 8, 15, 16, 24, and an 8+24 overlay mode. All visual types are supported
for depth 8, and both TrueColor and DirectColor visuals are supported for
the other depths except 8+24 mode which supports PseudoColor, GrayScale
and TrueColor. Multi-head configurations are supported.
mga driver supports PCI and AGP video cards based on the following Matrox
refer to XF86Config(5)
for general configuration details. This section
only covers configuration details specific to this driver.
- Millennium (original)
- Millennium G200 and Mystique G200
The driver auto-detects
the chipset type, but the following ChipSet names may optionally be specified
in the config file "Device" section, and will override the auto-detection:
"mga2064w", "mga1064sg", "mga2164w", "mga2164w agp", "mgag100", "mgag200",
"mgag200 pci" "mgag400".
The driver will auto-detect the amount of video
memory present for all chips except the Millennium II. In the Millennium
II case it defaults to 4096 kBytes. When using a Millennium II, the actual
amount of video memory should be specified with a VideoRam entry in the
config file "Device" section.
The following driver Options are supported:
Authors include: Radoslaw Kapitan,
Mark Vojkovich, and also David Dawes, Guy Desbief, Dirk Hohndel, Doug Merritt,
Andrew E. Mileski, Andrew van der Stock, Leonard N. Zubkoff.
- 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"
or disable the HW cursor. Default: on.
- Option "MGASDRAM" "boolean"
whether G100 and G200 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 prescence
SDRAM on secondary heads in multihead configurations. Default: auto-detected.
- Option "NoAccel" "boolean"
- Disable or enable acceleration. Default: acceleration
- Option "OverclockMem"
- Set clocks to values used by some commercial
X-Servers (G100, G200 and G400 only). Default: off.
- Option "Overlay"
8+24 overlay mode. Only appropriate for depth 24. (Note: the G100 is unaccelerated
in the 8+24 overlay mode due to a missing hardware feature) Default: off.
- 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 unaccelerated. Default: no rotation.
- Enable or disable use of the shadow framebuffer layer.
for further information. Default: off.
- Option "SyncOnGreen"
- Enable or disable combining the sync signals with the green signal.
- Option "UseFBDev" "boolean"
- Enable or disable use of on OS-specific
fb interface (and is not supported on all OSs). See fbdevhw(4)
information. Default: off.
- Option "VideoKey" "integer"
- This sets the default
pixel value for the YUV video overlay key. Default: undefined.
- Option "TexturedVideo"
- This has XvImage support use the texture engine rather than the
video overlay. This option is only supported by the G200 and G400, and only
in 16 and 32 bits per pixel. Default: off.
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