Ubuntu Manpage: mga - Matrox video driver

Provided by: xserver-xorg-video-mga-lts-vivid_1.6.3-2ubuntu1~trusty1_amd64

NAME

       mga - Matrox video driver

SYNOPSIS

       Section "Device"
         Identifier "devname"
         Driver "mga"
         ...
       EndSection

DESCRIPTION

       mga  is  an  Xorg  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-card configurations are supported.  XVideo is supported on
       G200 and newer systems, with either TexturedVideo or video overlay.  The  second  head  of
       dual-head  cards  is supported for the G450 and G550.  Support for the second head on G400
       cards  requires  a  binary-only  "mga_hal"  module   that   is   available   from   Matrox
       <http://www.matrox.com>,  and  may  be on the CD supplied with the card.  That module also
       provides various other enhancements, and may be necessary to use the DVI (digital)  output
       on the G550 (and other cards).

SUPPORTED HARDWARE

       The mga driver supports PCI and AGP video cards based on the following Matrox chips.  They
       are listed in approximate chronological order of production (with the most recent chipsets
       listed  last),  so  consult  this list when you are unsure whether your card is meant when
       references are made to ‘G200 and later’ chips, for example.

       MGA2064W

       MGA1064SG
              Mystique

       MGA2164W
              Millennium II

       G100   Productiva G100

       G200   Millennium G200 and Mystique G200

       G400   Millennium G400, Millennium G400 MAX, Millennium G450, and Marvel G450 eTV

       G550   Millennium G550 and Millennium G550 Dual DVI

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, 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", "mgag550".

The G450 is Chipset "mgag400" with ChipRev 0x80.

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:

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 secondary 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 "AccelMethod" "string"
Chooses between available acceleration architectures. Valid options are XAA and
EXA. XAA is the traditional acceleration architecture and support for it is very
stable. EXA is a newer acceleration architecture with better performance for the
Render and Composite extensions, but the rendering code for it is newer and
possibly unstable. The default is XAA.

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 "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.

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 supported on all
OSs). See fbdevhw(4) 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.

Option "OldDmaInit" "boolean"
This forces the driver to use the old DMA initialization path for DRI. Use this
option only to support a older version of the DRI driver with a newer DRM (version
3.2 or later). This option also disables the use of direct rendering on PCI cards.
Default: off.

Option "ForcePciDma" "boolean"
This forces the use of PCI DMA even if AGP DMA could be used. This option is
primarily intended for testing purposes, but it could also be used on systems with
a buggy or poorly function AGP implementation. Default: off.

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