1mga(4)                     Kernel Interfaces Manual                     mga(4)
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NAME

6       mga - Matrox video driver
7

SYNOPSIS

9       Section "Device"
10         Identifier "devname"
11         Driver "mga"
12         ...
13       EndSection
14

DESCRIPTION

16       mga  is  an  Xorg  driver  for Matrox video cards.  The driver is fully
17       accelerated, and provides support for the following framebuffer depths:
18       8,  15,  16,  24,  and an 8+24 overlay mode.  All visual types are sup‐
19       ported for depth 8, and both TrueColor and DirectColor visuals are sup‐
20       ported  for  the  other  depths except 8+24 mode which supports Pseudo‐
21       Color, GrayScale and TrueColor.   Multi-card  configurations  are  sup‐
22       ported.   XVideo  is  supported  on G200 and newer systems, with either
23       TexturedVideo or video overlay.  The second head of dual-head cards  is
24       supported  for  the G450 and G550.  Support for the second head on G400
25       cards requires a binary-only "mga_hal" module that  is  available  from
26       Matrox  <http://www.matrox.com>, and may be on the CD supplied with the
27       card.  That module also provides various other enhancements, and may be
28       necessary  to  use  the  DVI  (digital)  output  on the G550 (and other
29       cards).
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SUPPORTED HARDWARE

32       The mga driver supports PCI and AGP video cards based on the  following
33       Matrox  chips.   They  are listed in approximate chronological order of
34       production (with the most recent chipsets listed last), so consult this
35       list when you are unsure whether your card is meant when references are
36       made to ‘G200 and later’ chips, for example.
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38       MGA2064W
39
40       MGA1064SG
41              Mystique
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43       MGA2164W
44              Millennium II
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46       G100   Productiva G100
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48       G200   Millennium G200 and Mystique G200
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50       G400   Millennium G400, Millennium G400 MAX, Millennium G450, and  Mar‐
51              vel G450 eTV
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53       G550   Millennium G550 and Millennium G550 Dual DVI
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CONFIGURATION DETAILS

56       Please  refer  to xorg.conf(5) for general configuration details.  This
57       section only covers configuration details specific to this driver.
58
59       The driver auto-detects the chipset type,  but  the  following  ChipSet
60       names  may optionally be specified in the config file "Device" section,
61       and will override the auto-detection:
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63           "mga2064w", "mga1064sg",  "mga2164w",  "mga2164w  agp",  "mgag100",
64           "mgag200", "mgag200 pci", "mgag400", "mgag550".
65
66       The G450 is Chipset "mgag400" with ChipRev 0x80.
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68       The  driver will auto-detect the amount of video memory present for all
69       chips except the Millennium II.  In the Millennium II case it  defaults
70       to 4096 kBytes.  When using a Millennium II, the actual amount of video
71       memory should be specified with a VideoRam entry  in  the  config  file
72       "Device" section.
73
74       The following driver Options are supported:
75
76       Option "ColorKey" "integer"
77              Set  the  colormap  index  used for the transparency key for the
78              depth 8 plane when operating in 8+24 overlay  mode.   The  value
79              must be in the range 2-255.  Default: 255.
80
81       Option "HWCursor" "boolean"
82              Enable or disable the HW cursor.  Default: on.
83
84       Option "MGASDRAM" "boolean"
85              Specify whether G100, G200 or G400 cards have SDRAM.  The driver
86              attempts to auto-detect this based on the card's  PCI  subsystem
87              ID.   This  option  may be used to override that auto-detection.
88              The mga driver is not able to auto-detect  the  presence  of  of
89              SDRAM  on  secondary  heads  in multihead configurations so this
90              option will often need to be specified in  multihead  configura‐
91              tions.  Default: auto-detected.
92
93       Option "NoAccel" "boolean"
94              Disable   or  enable  acceleration.   Default:  acceleration  is
95              enabled.
96
97       Option "AccelMethod" "string"
98              Chooses between  available  acceleration  architectures.   Valid
99              options  are  XAA  and EXA.  XAA is the traditional acceleration
100              architecture and support for it is very stable.  EXA is a  newer
101              acceleration architecture with better performance for the Render
102              and Composite extensions, but the rendering code for it is newer
103              and possibly unstable.  The default is XAA.
104
105       Option "NoHal" "boolean"
106              Disable  or  enable  loading the "mga_hal" module.  Default: the
107              module is loaded when available and when using hardware that  it
108              supports.
109
110       Option "OverclockMem"
111              Set  clocks  to  values used by some commercial X Servers (G100,
112              G200 and G400 only).  Default: off.
113
114       Option "Overlay" "value"
115              Enable 8+24 overlay mode.  Only appropriate for depth 24.   Rec‐
116              ognized  values  are:  "8,24", "24,8". Default: off.  (Note: the
117              G100 is unaccelerated in the 8+24 overlay mode due to a  missing
118              hardware feature.)
119
120       Option "PciRetry" "boolean"
121              Enable or disable PCI retries.  Default: off.
122
123       Option "Rotate" "CW"
124
125       Option "Rotate" "CCW"
126              Rotate  the display clockwise or counterclockwise.  This mode is
127              unaccelerated.  Default: no rotation.
128
129       Option "ShadowFB" "boolean"
130              Enable or disable use of the shadow framebuffer layer.  Default:
131              off.
132
133       Option "SyncOnGreen" "boolean"
134              Enable or disable combining the sync signals with the green sig‐
135              nal.  Default: off.
136
137       Option "UseFBDev" "boolean"
138              Enable or disable use of on OS-specific fb interface (and is not
139              supported  on all OSs).  See fbdevhw(4) for further information.
140              Default: off.
141
142       Option "VideoKey" "integer"
143              This sets the default pixel value for the YUV video overlay key.
144              Default: undefined.
145
146       Option "TexturedVideo" "boolean"
147              This  has XvImage support use the texture engine rather than the
148              video overlay.  This option is only supported by G200 and  later
149              chips, and only at 16 and 32 bits per pixel.  Default: off.
150
151       Option "OldDmaInit" "boolean"
152              This  forces  the  driver to use the old DMA initialization path
153              for DRI.  Use this option only to support a older version of the
154              DRI driver with a newer DRM (version 3.2 or later).  This option
155              also  disables  the  use  of  direct  rendering  on  PCI  cards.
156              Default: off.
157
158       Option "ForcePciDma" "boolean"
159              This  forces  the  use of PCI DMA even if AGP DMA could be used.
160              This option is primarily intended for testing purposes,  but  it
161              could  also  be  used on systems with a buggy or poorly function
162              AGP implementation.  Default: off.
163

SEE ALSO

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

168       Authors include: Radoslaw  Kapitan,  Mark  Vojkovich,  and  also  David
169       Dawes,  Guy  Desbief,  Dirk  Hohndel,  Doug Merritt, Andrew E. Mileski,
170       Andrew van der Stock, Leonard N. Zubkoff, Andrew C. Aitchison.
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174X Version 11                xf86-video-mga 1.4.6.1                      mga(4)
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