siliconmotion - Silicon Motion video driver
[ Option "optionname" ["optionvalue"]]
siliconmotion is an XFree86 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
Please refer to XF86Config(5x) for general configuration details. This section only cov-
ers 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 equiva-
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.
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:
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 acceler-
ate with hardware. Default: acceleration is enabled.
alter the settings for the threshold at which the pixel FIFO takes over the inter-
nal memory bus to refill itself. The smaller this threshold, the better the accel-
eration 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_conservative 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: off.
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, espe-
cially for small fills/blits, because the driver does not have to poll the ViRGE
before sending it commands to make sure it is ready. It should work on most recent
PCI chipsets. Default: off.
The following additional Options are supported:
Option "ShowCache" "boolean"
Enable or disable viewing offscreen cache memory. A development debug option.
XFree86(1), XF86Config(5x), xf86config(1), Xserver(1), X(7x)
For assistance with this driver, or XFree86 in general, check the XFree86 web site at
http://www.xfree86.org. A FAQ is available on the web site at
http://www.xfree86.org/FAQ/. If you find a problem with XFree86 or have a question not
answered in the FAQ please use our bug report form available on the web site or send mail
to XFree86@XFree86.org. 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.
XFree86 Version Version 4.3.0 siliconmotion(4x)