via(7)

NAME

       via - VIA video driver

SYNOPSIS

       Section "Device"
         Identifier "devname"
         Driver "via"
         ...
       EndSection

DESCRIPTION

       via is an Xorg driver for VIA video chipsets.

       The via driver supports the VIA CLE266 (CLE3122, CLE3022) chipset video
       and the VIA KM400/K8M800 VT3204/5/7204/5 video, including 2D  accelera-
       tion  and  the Xv video overlay extensions. Flat panel, TV and VGA out-
       puts are supported.

       Direct rendering 3D is available for this device only  using  Xorg  4.2
       builds.  If  you  are  interested in porting the DRI support to current
       Xorg then please see the DRI project on sourceforge.net.

CONFIGURATION DETAILS

       Please refer to xorg.conf(4) for general configuration  details.   This
       section only covers configuration details specific to this driver.

       The following driver options are supported

       Option "NoAccel" "boolean"
              Disable   or   enable  acceleration.  Default:  acceleration  is
              enabled.

       Option "HWCursor" "boolean"
              Disable or enable  use  of  hardware  cursors.  The  default  is
              enabled.

       Option "SWCursor" "boolean"
              Disable  or  enable the use of a software cursor. The default is
              disabled.

       Option "ShadowFB" "boolean"
              Use a shadow frame buffer. This is required  when  rotating  the
              display, but otherwise defaults to disabled.

       Option "UseBIOS" "boolean"
              Use the video BIOS to set modes. Default false.

       Option "VideoRAM" "boolean"
              Override  the  VideoRAM  auto  detection.  This  should never be
              needed.

       Option "Rotate" "string"
              Rotate the display either clockwise ("CW") or counter  clockwise
              ("CCW").  Rotation is only supported unaccelerated.

       Option "ActiveDevice" "string"
              Specify the active device combination. The choices are "CRT,TV",
              "CRT,LCD", "CRT,DFP", "TV,DFP", "CRT", "LCD", or "DFP", for  the
              various supported combinations of VGA CRT output, LCD panel out-
              put, DFP output and TV output.

       Option "LCDDualEdge" "boolean"
              Use dual edge mode to set the LCD.

       Option "Center" "boolean"
              Disable or enable image centering on DVI displays.

       Option "PanelSize" "string"
              Specify the size (width x height) of the LCD panel  attached  to
              the  system.  Sizes  640x480,  800x600, 1024x768, 1280x1024, and
              1400x1050 are supported.

       Option "TVDotCrawl" "boolean"
              Disable or enable dotcrawl.

       Option "TVType" "string"
              Specify TV output format. The driver currently supports NTSC and
              PAL timings only.

       Option "TVOutput" "string"
              Specify  which  TV output to use. The driver supports "S-Video",
              "Composite", "SC", "RGB" and "YCbCr" outputs. Note that on  many
              boards  the  composite  video  port is shared with audio out and
              jumper selected.

       Option "TVVScan" "string"
              Specify whether to underscan the TV  image  (bordering  it  with
              black), or overscan it (losing the edges of the picture).

       Option "TVHScale" "string"
              Not yet implemented.

       Option "TVEncoder" "string"
              Specify  which  TV  encoder  chip is attached to the system. The
              driver currently supports the VT1621 and VT1622 encoders.

       Option "Refresh" "integer"
              Specify the desired refresh.

       Option "DisableVQ" "boolean"
              Disable or enable the use of VQ. VQ is enabled by default.

       Option "Cap0Deinterlace" "string"
              Set the capture 0 port interlace mode to either Bob or Weave.

       Option "Cap1Deinterlace" "string"
              Set the capture 1 port interlace mode to either Bob or Weave.

       Option "Cap0FieldSwap" "string"
              Perform field swapping on capture port 0.

       Option "DRIXINERAMA" "boolean"
              Set DRI Xinerama mode. Currently unsupported.

       Option "NoDDCValue" "boolean"
              Disable the use of DDC to set the horizontal sync  and  vertical
              refresh.

SEE ALSO

       Xorg(1), xorg.conf(4), xorgconfig(1), Xserver(1), X(5)

AUTHORS

       Authors include: ...

X.Org                            Version 6.8.2                          VIA(7)