mga(7)

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 sup-
       ported for depth 8, and both TrueColor and DirectColor visuals are sup-
       ported  for  the  other  depths except 8+24 mode which supports Pseudo-
       Color, GrayScale and TrueColor.   Multi-card  configurations  are  sup-
       ported.   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:

       MGA2064W    Millennium (original)

       MGA1064SG   Mystique

       MGA2164W    Millennium II

       G100

       G200        Millennium G200 and Mystique G200

       G400

       G450

       G550

CONFIGURATION DETAILS

       Please  refer  to xorg.conf(4) 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  configura-
              tions.  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.  Rec-
              ognized values are: "8,24", "24,8". Default:  off.   (Note:  the
              G100  is unaccelerated in the 8+24 overlay mode due to a missing
              hardware feature.)

       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 sig-
              nal.  Default: off.

       Option "UseFBDev" "boolean"
              Enable or disable use of on OS-specific fb interface (and is not
              supported on all OSs).  See fbdevhw(7) 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 the G200 and
              G400, and only in 16 and 32 bits per pixel.  Default: off.

SEE ALSO

       Xorg(1), xorg.conf(4), xorgconfig(1), Xserver(1), X(5)

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.

X.Org                            Version 6.8.2                          MGA(7)