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I810(4)                FreeBSD Kernel Interfaces Manual                I810(4)

NAME
       i810 - Intel 8xx integrated graphics chipsets

SYNOPSIS
       Section "Device"
         Identifier "devname"
         Driver "i810"
         ...
       EndSection

DESCRIPTION
       i810 is an XFree86 driver for Intel integrated graphics chipsets.  The
       driver supports depths 8, 15, 16 and 24.  All visual types are
       supported in depth 8.  For the i810/i815 other depths support the
       TrueColor and DirectColor visuals.  For the 830M and later, only the
       TrueColor visual is supported for depths greater than 8.  The driver
       supports hardware accelerated 3D via the Direct Rendering
       Infrastructure (DRI), but only in depth 16 for the i810/i815 and depths
       16 and 24 for the 830M and later.

SUPPORTED HARDWARE
       i810 supports the i810, i810-DC100, i810e, i815, 830M, 845G, 852GM,
       855GM, 865G, 915G and 915GM chipsets.

CONFIGURATION DETAILS
       Please refer to XF86Config(5) for general configuration details.  This
       section only covers configuration details specific to this driver.

       The Intel 8xx family of integrated graphics chipsets has a unified
       memory architecture and uses system memory for video ram.  For the i810
       and i815 familiy of chipset, operating system support for allocating
       system memory for video use is required in order to use this driver.
       For the 830M and later, this is required in order for the driver to use
       more video ram than has been pre-allocated at boot time by the BIOS.
       This is usually achieved with an "agpgart" or "agp" kernel driver.
       Linux, and recent versions of FreeBSD, OpenBSD and NetBSD have such
       kernel drivers available.

       By default 8 Megabytes of system memory are used for graphics.  For the
       830M and later, the default is 8 Megabytes when DRI is not enabled and
       32 Megabytes with DRI is enabled.  This amount may be changed with the
       VideoRam entry in the config file Device section.  It may be set to any
       reasonable value up to 64MB for older chipsets or 128MB for newer
       chipets.  It is advisable to check the XFree86 log file to check if any
       features have been disabled because of insufficient video memory.  In
       particular, DRI support or tiling mode may be disabled with
       insufficient video memory.  Either of these being disabled will reduce
       performance for 3D applications.  Note however, that increasing this
       value too much will reduce the amount of system memory available for
       other applications.

       The driver makes use of the video BIOS to program video modes for the
       830M and later.  This limits the video modes that can be used to those
       provided by the video BIOS, and to those that will fit into the amount
       of video memory that the video BIOS is aware of.

       The following driver Options are supported:

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

       Option "SWCursor" "boolean"
              Disable or enable software cursor.  Default: software cursor is
              disable and a hardware cursor is used for configurations where
              the hardware cursor is available.

       Option "ColorKey" "integer"
              This sets the default pixel value for the YUV video overlay key.
              Default: undefined.

       Option "CacheLines" "integer"
              This allows the user to change the amount of graphics memory
              used for 2D acceleration and video.  Decreasing this amount
              leaves more for 3D textures.  Increasing it can improve 2D
              performance at the expense of 3D performance.  Default: depends
              on the resolution, depth, and available video memory.  The
              driver attempts to allocate at least enough to hold two DVD-
              sized YUV buffers by default.  The default used for a specific
              configuration can be found by examining the XFree86 log file.

       Option "DRI" "boolean"
              Disable or enable DRI support.  Default: DRI is enabled for
              configurations where it is supported.

       The following driver Options are supported for the i810 and i815
       chipsets:

       Option "DDC" "boolean"
              Disable or enable DDC support.  Default: enabled.

       Option "Dac6Bit" "boolean"
              Enable or disable 6-bits per RGB for 8-bit modes.  Default:
              8-bits per RGB for 8-bit modes.

       Option "XvMCSurfaces" "integer"
              This option enables XvMC.  The integer parameter specifies the
              number of surfaces to use.  Valid values are 6 and 7.  Default:
              XvMC is disabled.

       The following driver Options are supported for the 830M and later
       chipsets:

       Option "VBERestore" "boolean"
              Enable or disable the use of VBE save/restore for saving and
              restoring the initial text mode.  This is disabled by default
              because it causes lockups on some platforms.  However, there are
              some cases where it must enabled for the correct restoration of
              the initial video mode.  If you are having a problem with that,
              try enabling this option.  Default: Disabled.

       Option "VideoKey" "integer"
              This is the same as the "ColorKey" option described above.  It
              is provided for compatibility with most other drivers.

       Option "XVideo" "boolean"
              Disable or enable XVideo support.  Default: XVideo is enabled
              for configurations where it is supported.

       Option "MonitorLayout" "anystr"
              Allow different monitor configurations. e.g. "CRT,LFP" will
              configure a CRT on Pipe A and an LFP on Pipe B. Regardless of
              the primary heads' pipe it is always configured as
              "<PIPEA>,<PIPEB>".  Additionally you can add different
              configurations such as "CRT+DFP,LFP" which would put a digital
              flat panel and a CRT on pipe A, and a local flat panel on pipe
              B.  For single pipe configurations you can just specify the
              monitors types on Pipe A, such as "CRT+DFP" which will enable
              the CRT and DFP on Pipe A.  Valid monitors are CRT, LFP, DFP,
              TV, CRT2, LFP2, DFP2, TV2 and NONE.  NOTE: Some configurations
              of monitor types may fail, this depends on the Video BIOS and
              system configuration.  Default: Not configured, and will use the
              current head's pipe and monitor.

       Option "Clone" "boolean"
              Enable Clone mode on pipe B. This will setup the second head as
              a complete mirror of the monitor attached to pipe A.  NOTE:
              Video overlay functions will not work on the second head in this
              mode.  If you require this, then use the MonitorLayout above and
              do (as an example) "CRT+DFP,NONE" to configure both a CRT and
              DFP on Pipe A to achieve local mirroring and disable the use of
              this option.  Default: Clone mode on pipe B is disabled.

       Option "CloneRefresh" "integer"
              When the Clone option is specified we can drive the second
              monitor at a different refresh rate than the primary.  Default:
              60Hz.

       Option "CheckDevices" "boolean"
              On mobile platforms it's desirable to monitor the device status
              and switch the outputs accordingly. For example, when the lid is
              opened or closed, or when using hotkeys without ACPI support. By
              default this option is on for mobile platforms and is not
              available on desktop systems.  Default: enabled.

       Option "FixedPipe" "anystr"
              When using a dual pipe system, it may be preferable to fix the
              primary pipe such that if you boot up on an external screen you
              may want the internal flat panel to be the primary. Using this
              option will allow this.  Options are A or B.  Default: disabled
              (uses current pipe as primary).

       Option "DisplayInfo" "boolean"
              It has been found that a certain BIOS call can lockup the
              Xserver because of a problem in the Video BIOS. The log file
              will identify if you are suffering from this problem and tell
              you to turn this option off.  Default: enabled

       Option "DevicePresence" "boolean"
              Tell the driver to perform an active detect of the currently
              connected monitors. This option is useful if the monitor was not
              connected when the machine has booted, but unfortunately it
              doesn't always work and is extremely dependent upon the Video
              BIOS.  Default: disabled

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
              Rotate the desktop 90 degrees clockwise or counterclockwise.
              This option forces the ShadowFB option on, and disables
              acceleration.  Default: no rotation.

       Option "ShadowFB" "boolean"
              Enable or disable use of the shadow framebuffer layer.  This
              option disables acceleration.  Default: off.

SEE ALSO
       XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7)

AUTHORS
       Authors include: Keith Whitwell, and also Jonathan Bian, Matthew J
       Sottek, Jeff Hartmann, Mark Vojkovich, Alan Hourihane, H. J. Lu.  830M
       and 845G support reworked for XFree86 4.3 by David Dawes and Keith
       Whitwell.  852GM, 855GM, and 865G support added by David Dawes and
       Keith Whitwell.  915G and 915GM support added by Alan Hourihane and
       Keith Whitwell.  Dual Head, Clone and lid status support added by Alan
       Hourihane.

XFree86                          Version 4.7.0                         I810(4)

NAME | SYNOPSIS | DESCRIPTION | SUPPORTED HARDWARE | CONFIGURATION DETAILS | SEE ALSO | AUTHORS

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