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mga(4x)								       mga(4x)

       mga - Matrox video driver

       Section "Device"
	 Identifier "devname"
	 Driver	"mga"

       mga  is an Xorg driver for Matrox video cards.  The driver is fully ac-
       celerated, 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  <>,	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

       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.



	      Millennium II

       G100   Productiva G100

       G200   Millennium G200 and Mystique G200

       G400   Millennium G400, Millennium G400 MAX, Millennium G450, and  Mar-
	      vel G450 eTV

       G550   Millennium G550 and Millennium G550 Dual DVI

       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 op-
	      tion will	often need to be  specified  in	 multihead  configura-
	      tions.  Default: auto-detected.

       Option "NoAccel"	"boolean"
	      Disable  or  enable  acceleration.  Default: acceleration	is en-

       Option "AccelMethod" "string"
	      Chooses between available	acceleration architectures.  Valid op-
	      tions  are XAA and EXA.  XAA is the traditional acceleration ar-
	      chitecture 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

       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:

       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(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.

       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.  De-
	      fault: 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.

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

       Authors	include:  Radoslaw  Kapitan,  Mark  Vojkovich,	and also David
       Dawes, Guy Desbief, Dirk	Hohndel, Doug Merritt, Andrew E. Mileski,  An-
       drew van	der Stock, Leonard N. Zubkoff, Andrew C. Aitchison.

X Version 11		     xf86-video-mga 1.6.3		       mga(4x)


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