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siliconmotion(4)	   Kernel Interfaces Manual	      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   SM730

       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.   De-
	      fault: 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-Mi-
	      nus).  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  op-
	      tions 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, be-
	      cause the	driver does not	have to	poll the ViRGE before  sending
	      it commands to make sure it is ready. It should work on most re-
	      cent PCI chipsets.  Default: off.

       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 Xorg web
       site at  If you find a	problem	with Xorg  or  have  a
       question	 not answered in the FAQ please	use our	bug report form	avail-
       able on the web site.  When reporting problems with the driver send  as
       much  detail  as	possible, including chipset type, a server output log,
       and operating system specifics.

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

X.Org				 Version 6.7.0		      siliconmotion(4)


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