siliconmotion man page on Scientific

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siliconmotion(4)					      siliconmotion(4)

       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

       Cougar3DR   SM731

       MSOC	   SM501,SM502

       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.

       Multihead mode configuration is done  through  the  RandR1.2  interface
       (see  xorg.conf(5)  and	xrandr(1)  for	further information). Hardware
       accelerated screen rotation and framebuffer resizing are only supported
       with  the  EXA  acceleration  architecture  (see the AccelMethod option

       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",
	   "cougar3dr", "msoc".

       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 "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: off for SM72x and SM5xx, otherwise on.

       Option "Dualhead" "boolean"
	      Enable dualhead mode.  Currently not all chips are supported and
	      hardware video overlay (XV) support may have  some  limitations.
	      Default: off.

       Option "PanelSize" "widthxheight"
	      Override LCD panel dimension autodetection.

       Option "UseFBDev" "boolean"
	      Don't actually program the hardware mode registers, but leave it
	      as set by the operating system. Only available  on  MSOC	chips.
	      Default: off.

       Option "CSCVideo" "boolean"
	      CSC  video  uses color space conversion to render video directly
	      to the framebuffer, without using an overlay.  Only available on
	      MSOC chips. Default: on.

       The following video memory Options are supported:

       Option "mclk" "integer"
	      Sets  the memory clock. You must specify the units.  For example
	      50Mhz is the same as 50000Khz or 50000000Hz.  On MSOC chips this
	      is  the main clock source for all functional blocks, such as the
	      2D engine, GPIO, Video Engine, and DMA Engine.  This  option  is
	      only  used for debugging purposes on MSOC chips.	Default: probe
	      the memory clock value, and use it at server start.

       Option "mxclk" "integer"
	      Sets the memory clock. You must specify the units.  For  example
	      50Mhz  is	 the same as 50000Khz or 50000000Hz.  Clock source for
	      the local SDRAM controller. This option  is  only	 available  on
	      MSOC chips and used only for debugging purposes.	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 "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 PCI bus Options are supported:

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

       Option "PciRetry" "boolean"
	      will allow the driver to rely on PCI Retry to program the regis‐
	      ters.   PciBurst	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 card before sending it com‐
	      mands to make sure it is ready. It should work  on  most	recent
	      PCI chipsets.  Default: value of PciBurst option.

       Xorg(1), xorg.conf(5), 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 1.7.7	      siliconmotion(4)

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