siliconmotion - Silicon Motion video driver


       Section "Device"
         Identifier "devname"
         Driver "siliconmotion"
         [ Option "optionname" ["optionvalue"]]


       siliconmotion  is  an Xorg driver for Silicon Motion based video cards.
       The driver is fully accelerated, and provides support for the following
       framebuffer  depths: 8, 16, and 24.  All visual types are supported for
       depth 8, and TrueColor visuals are supported for the other depths.


       The siliconmotion driver supports PCI and AGP video cards based on  the
       following Silicon Motion chips:

       Lynx        SM910

       LynxE       SM810

       Lynx3D      SM820

       LynxEM      SM710

       LynxEM+     SM712

       Lynx3DM     SM720


       Please  refer  to xorg.conf(5) for general configuration details.  This
       section only covers configuration details specific to this driver.  All
       options  names  are case and white space insensitive when parsed by the
       server, for example,  "lynxe" and "LynxE" are equivalent.

       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:

           "lynx", "lynxe", "lynx3d", "lynxem", "lynxem+", "lynx3dm".

       The following Cursor Options are supported:

       Option "HWCursor" "boolean"
              Enable or disable the HW cursor.  Default: on.

       Option "SWCursor" "boolean"
              Inverse of "HWCursor".  Default: off.

       The following display Options are supported:

       Option "ShadowFB" "boolean"
              Use shadow framebuffer.  Default: off.

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
              Rotate the screen CW - clockwise or  CCW  -  counter  clockwise.
              Uses ShadowFB.  Default: no rotation.

       Option "VideoKey" "integer"
              Set the video color key.  Default: a little off full blue.

       Option "ByteSwap" "boolean"
              Turn  on  byte  swapping  for  capturing  using  SMI demo board.
              Default: off.

       Option "Interlaced" "boolean"
              Turn on interlaced video capturing.  Default: off.

       Option "UseBIOS" "boolean"
              Use the BIOS to set the modes. This is  used  for  custom  panel
              timings.  Default: on.

       Option "ZoomOnLCD" "boolean"
              Allow  changing  resolution  on LCD (Ctrl-Alt-Plus and Ctrl-Alt-
              Minus).  Default: off.

       Option "Dualhead" "boolean"
              Enable dualhead mode.  Due to hardware limitations, dualhead  is
              limited  to  depth  16 and to the panel size and timings on both
              the flat panel and the CRT and the CRT must be to the  right  of
              the  flat  panel.   Only lynx chips are supported at the moment.
              Default: off.

       The following video memory Options are supported:

       Option "set_mclk" "integer"
              sets the memory clock, where integer is in kHz, and  integer  <=
              100000.   Default:  probe  the memory clock value, and use it at
              server start.

       The following acceleration and graphics engine Options are supported:

       Option "NoAccel"
              Disable acceleration.  Very useful for determining if the driver
              has  problems  with  drawing and acceleration routines.  This is
              the first option to try if your server runs but you see  graphic
              corruption on the screen.  Using it decreases performance, as it
              uses software emulation for drawing operations the video  driver
              can accelerate with hardware.  Default: acceleration is enabled.

       Option "fifo_aggressive"

       Option "fifo_moderate"

       Option "fifo_conservative"
              alter the settings for the threshold at  which  the  pixel  FIFO
              takes over the internal memory bus to refill itself. The smaller
              this threshold, the better the acceleration performance  of  the
              card. You may try the fastest setting (fifo_aggressive) and move
              down if you encounter pixel  corruption.   The  optimal  setting
              will  probably depend on dot-clock and on color depth. Note that
              specifying any of these options will  also  alter  other  memory
              settings  which may increase performance, so trying fifo_conser-
              vative will in most cases be a slight  benefit  (this  uses  the
              chip  defaults).   If pixel corruption or transient streaking is
              observed  during  drawing  operations  then  removing  any  fifo
              options is recommended.  Default: none.

       The following PCI bus Options are supported:

       Option "pci_burst" "boolean"
              will  enable  PCI  burst mode. This should work on all but a few
              broken PCI chipsets, and will  increase  performance.   Default:

       Option "pci_retry" "boolean"
              will  allow the driver to rely on PCI Retry to program the ViRGE
              registers.  pci_burst must be enabled for this  to  work.   This
              will  increase  performance,  especially  for small fills/blits,
              because the driver does not have to poll the ViRGE before  send-
              ing it commands to make sure it is ready. It should work on most
              recent PCI chipsets.  Default: off.

       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.

       The following additional Options are supported:

       Option "ShowCache" "boolean"
              Enable or disable viewing offscreen cache memory.  A development
              debug option.  Default: off.


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


       For assistance with this driver, or Xorg in general, check the web site
       at  If you find a problem with Xorg or have a ques-
       tion not answered in the FAQ please use our bug report  form  available
       on  the  web  site  or  send  mail to  When
       reporting problems with the driver send as  much  detail  as  possible,
       including  chipset  type,  a  server  output  log, and operating system


       Kevin Brosius, Matt Grossman, Harald Koenig, Sebastien  Marineau,  Mark
       Vojkovich, Frido Garritsen, Corvin Zahn.

X Version 11            xf86-video-siliconmotion 1.5.1        siliconmotion(4)

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