mga(4)
- NetBSD Manual Pages
MGA(4) XFree86 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 supported for depth 8,
and both TrueColor and DirectColor visuals are supported
for the other depths except 8+24 mode which supports Pseu
doColor, GrayScale and TrueColor. Multi-card configura
tions 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. Support for the second head on G400 cards
requires a binary-only "mga_hal" module that is available
from Matrox <http://www.matrox.com>. That module also
provides various other enhancements.
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 follow
ing ChipSet names may optionally be specified in the con
fig file "Device" section, and will override the auto-
4.2.1 Version 1
MGA(4) XFree86 MGA(4)
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 config
urations so this option will often need to be spec
ified in multihead configurations. Default: auto-
detected.
Option "NoAccel" "boolean"
Disable or enable acceleration. Default: accelera
tion 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"
Enable 8+24 overlay mode. Only appropriate for
depth 24. (Note: the G100 is unaccelerated in the
8+24 overlay mode due to a missing hardware
4.2.1 Version 2
MGA(4) XFree86 MGA(4)
feature.) 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 inter
face (and is not supported on all OSs). See fbde
vhw(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.
4.2.1 Version 3
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