mga(4)
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.
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 "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.
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
