intel

NAME

intel - Intel integrated graphics chipsets

SYNOPSIS

Section "Device"
  Identifier "devname"
  Driver "intel"
  ...
EndSection

DESCRIPTION

intel is an Xorg 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 i830M 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

intel supports the i810, i810-DC100, i810e, i815, i830M, 845G, 852GM, 855GM, 865G, 915G, 915GM, 945G, 945GM, 965G, 965Q, 946GZ and 965GM chipsets.

CONFIGURATION DETAILS

Please refer to xorg.conf(5x) for general configuration details. This section only covers configuration details specific to this driver.

The Intel 8xx and 9xx families of integrated graphics chipsets has a unified memory architecture and uses system memory for video ram. For the i810 and i815 family 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, FreeBSD, OpenBSD, NetBSD, and Solaris have such kernel drivers available.

By default, the i810 will use 8 megabytes of system memory for graphics. For the 830M and later, the driver will automatically size its memory allocation according to the features it will support. The amount of memory used may be limited by using the VideoRam entry in the config file Device section. Limiting the amount of memory used may result in features being disabled, so if you choose to configure it, it is advisable to check the Xorg log file to see 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.

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.
This option only takes effect when XAA acceleration is enabled.
Default: depends on the resolution, depth, and available video memory. The
driver attempts to allocate space for at 3 screenfuls of pixmaps plus an HD-sized XV video. The default used for a specific configuration can be found by examining the Xorg 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 "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 "Legacy3D" "boolean"
Enable support for the legacy i915_dri.so 3D driver. This will, among other things, make the 2D driver tell libGL to load the 3D driver i915_dri.so instead of the newer i915tex_dri.so. This option is only used for chipsets in the range i830-i945. Default for i830-i945 series: Enabled for i915 drm versions < 1.7.0. Otherwise disabled. Default for i810: The option is not used. Default for i965: The option is always true.
Option "AperTexSize" "integer"
Give the size in kiB of the AGP aperture area that is reserved for the DRM memory manager present in i915 drm from version 1.7.0 and upwards, and that is used with the 3D driver in Mesa from version 6.5.2 and upwards. If the size is set too high to make room for pre-allocated VideoRam, the driver will try to reduce it automatically. If you use only older Mesa or DRM versions, you may set this value to zero, and atctivate the legacy texture pool (see Option "Legacy3D" ). If you run 3D programs with large texture memory requirements, you might gain some performance by increasing this value. Default: 32768.
Option "PageFlip" "boolean"
Enable support for page flipping. This should improve 3D performance at the potential cost of worse performance with mixed 2D/3D. Also note that this gives no benefit without corresponding support in the Mesa 3D driver and may not give the full benefit without triple buffering (see Option "TripleBuffer" ). Default for i810: The option is not used. Default for i830 and above: Disabled.
Option "TripleBuffer" "boolean"
Enable support for triple buffering. This should improve 3D performance at the potential cost of worse performance with mixed 2D/3D. Also note that this gives no benefit without corresponding support in the Mesa 3D driver and may not give any benefit without page flipping either (see Option "PageFlip" ). Default for i810: The option is not used. Default for i830 and above: Disabled.
Option "AccelMethod" "string"
Choose acceleration architecture, either "XAA" or "EXA". XAA is the old (but stable) XFree86 based acceleration architecture. EXA is a newer and simpler acceleration architecture designed to better accelerate the X Render extension. Default: "XAA".
Option "ModeDebug" "boolean"
Enable printing of additional debugging information about modesetting to the server log.

The 830M and newer driver supports RandR 1.2, exposing the VGA, LVDS (laptop panel), TMDS (DVI on SDVO/DVO cards), and TV (on 915GM/945GM) outputs. Per-output configuration is done through the Monitor section of xorg.conf(5x).

SEE ALSO

Xorg(1x), xorg.conf(5x), xorgconfig(1x), Xserver(1x), 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, 915GM, 945G, 945GM, 965G, 965Q and 946GZ support added by Alan Hourihane and Keith Whitwell. Lid status support added by Alan Hourihane. Textured video support for 915G and later chips, RandR 1.2 and hardware modesetting added by Eric Anholt and Keith Packard. EXA and Render acceleration added by Wang Zhenyu. TV out support added by Zou Nan Hai and Keith Packard. 965GM support added by Wang Zhenyu.