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MGA(4)									MGA(4)

NAME
       mga - Matrox video driver

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

DESCRIPTION
       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 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	XF86Config(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  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(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 the G200 and
	      G400, and	only in	16 and 32 bits per pixel.  Default: off.

SEE ALSO
       XFree86(1), XF86Config(5), xf86config(1), 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.

XFree86				 Version 4.7.0				MGA(4)

NAME | SYNOPSIS | DESCRIPTION | SUPPORTED HARDWARE | CONFIGURATION DETAILS | SEE ALSO | AUTHORS

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