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

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.

SEE ALSO

       Xorg(1), xorg.conf(5), Xserver(1), X(7)

AUTHORS

       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, Andrew C. Aitchison.