trident - Trident video driver
Section "Device"
  Identifier "devname"
  Driver "trident"
  ...
EndSection
trident is an Xorg driver for Trident video cards. The driver is
  accelerated, and provides support for the following framebuffer depths: 1, 4,
  8, 15, 16, and 24. Multi-head configurations are supported. The XvImage
  extension is supported on TGUI96xx and greater cards.
The trident driver supports PCI,AGP and ISA video cards based on the
  following Trident chips:
  - Blade
- Blade3D, CyberBlade series i1, i7 (DSTN), i1, i1 (DSTN), Ai1, Ai1 (DSTN),
      CyberBlade/e4, CyberBladeXP, CyberBladeAi1/XP, BladeXP
- Image
- 3DImage975, 3DImage985, Cyber9520, Cyber9525, Cyber9397, Cyber9397DVD
- ProVidia
- 9682, 9685, Cyber9382, Cyber9385, Cyber9388
- TGUI
- 9440AGi, 9660, 9680
- ISA/VLBus
- 8900C, 8900D, 9000, 9200CXr, Cyber9320, 9400CXi, 9440AGi These cards have
      been ported but need further testing and may not work.
Please refer to xorg.conf(5) for general configuration details. This section
  only covers configuration details specific to this driver.The following driver Options are supported:
  - Option "SWCursor" "boolean"
- Enable or disable the SW cursor. Default: off.
- Option "NoAccel" "boolean"
- Disable or enable acceleration. Default: acceleration is enabled.
- Option "PciRetry" "boolean"
- Enable or disable PCI retries. Default: off.
- Option "CyberShadow"
    "boolean"
- For Cyber chipsets only, turn off shadow registers. If you only see a
      partial display - this may be the option for you. Default: on.
- Option "CyberStretch"
    "boolean"
- For Cyber chipsets only, turn on stretching. When the resolution is lower
      than the LCD's screen, this option will stretch the graphics mode to fill
      the entire LCD. Default: off.
- Option "ShadowFB" "boolean"
- Enable or disable use of the shadow framebuffer layer. Default: off.
- Option "VideoKey" "integer"
- This sets the default pixel value for the YUV video overlay key. Default:
      undefined.
- Option "TVChipset" "string"
- This sets the TV chipset. Options are CH7005 or VT1621. Default: off.
- Option "TVSignal" "integer"
- This sets the TV signalling. Options are 0 for NTSC or 1 for PAL. Default:
      undefined.
- Option "NoPciBurst"
    "boolean"
- Turn off PCI burst mode, PCI Bursting is on by default. Default: off.
- Option "XvHsync" "integer"
- Override the default Horizontal-sync value for the Xv extension. This is
      used to center the Xv image on the screen. By default the values are
      assigned based on the video card. Default: 0.
- Option "XvVsync" "integer"
- Override the default Vertical-sync value for the Xv extension. This is
      used to center the Xv image on the screen. By default the values are
      assigned based on the video card. Default: 0.
- Option "XvBskew" "integer"
- Override the default Bottom skew value for the Xv extension. This is used
      to extend the Xv image on the screen at the bottom. By default the values
      are assigned based on the video card. Default: 0.
- Option "XvRskew" "integer"
- Override the default Right skew value for the Xv extension. This is used
      to extend the Xv image on the screen at the right. By default the values
      are assigned based on the video card. Default: 0.
- Option "Display" "string"
- Override the display. Possible values are "CRT", "LCD"
      and "Dual". Please note that this option is only experimentally.
      Default: Use display active when X started.
- Option "Display1400"
    "boolean"
- Inform driver to expect 1400x1050 display instead of a 1280x1024. Default:
      off.
- Option "GammaBrightness"
    "string"
- Set display gamma value and brightness. "string" is
      "gamma, brightness", where gamma is a
      floating point value greater than 0 and less or equal to 10.
      brightness is an integer value greater or equal to 0 and less than
      128. Default: gamma and brightness control is turned off. Note: This is
      not supported on all chipsets. Option "AccelMethod"
      "string" Choose acceleration architecture,
      either "XAA" or "EXA". XAA is the old (but stable)
      XFree86 based acceleration architecture. EXA is a newer and simpler
      acceleration architecture designed to better accelerate the X Render
      extension. Default: "XAA".
Xorg(1), xorg.conf(5), Xserver(1), X(7)
Author: Alan Hourihane, EXA for Blade chips by Jesse Barnes