1I810(4) Kernel Interfaces Manual I810(4)
2
6 i810 - Intel 8xx integrated graphics chipsets
7
9 Section "Device"
10 Identifier "devname"
11 Driver "i810"
12 ...
13 EndSection
14
16 i810 is an Xorg driver for Intel integrated graphics chipsets. The
17 driver supports depths 8, 15, 16 and 24. All visual types are sup‐
18 ported in depth 8. For the i810/i815 other depths support the True‐
19 Color and DirectColor visuals. For the i830M and later, only the True‐
20 Color visual is supported for depths greater than 8. The driver sup‐
21 ports hardware accelerated 3D via the Direct Rendering Infrastructure
22 (DRI), but only in depth 16 for the i810/i815 and depths 16 and 24 for
23 the 830M and later.
24
26 i810 supports the i810, i810-DC100, i810e, i815, i830M, 845G, 852GM,
27 855GM, 865G, 915G, 915GM, 945G, 945GM, 965G, 965Q and 946GZ chipsets.
28
31 Please refer to xorg.conf(5x) for general configuration details. This
32 section only covers configuration details specific to this driver.
33 The Intel 8xx and 9xx families of integrated graphics chipsets has a
35 unified memory architecture and uses system memory for video ram. For
36 the i810 and i815 family of chipset, operating system support for allo‐
37 cating system memory for video use is required in order to use this
38 driver. For the 830M and later, this is required in order for the
39 driver to use more video ram than has been pre-allocated at boot time
40 by the BIOS. This is usually achieved with an "agpgart" or "agp" ker‐
41 nel driver. Linux, and recent versions of FreeBSD, OpenBSD and NetBSD
42 have such kernel drivers available.
43 By default 8 Megabytes of system memory are used for graphics. For the
45 830M and later, the default is 8 Megabytes when DRI is not enabled and
46 32 Megabytes with DRI is enabled. This amount may be changed with the
47 VideoRam entry in the config file Device section. It may be set to any
48 reasonable value up to 64MB for older chipsets or 128MB for newer
49 chipets. It is advisable to check the Xorg log file to check if any
50 features have been disabled because of insufficient video memory. In
51 particular, DRI support or tiling mode may be disabled with insuffi‐
52 cient video memory. Either of these being disabled will reduce perfor‐
53 mance for 3D applications. Note however, that increasing this value
54 too much will reduce the amount of system memory available for other
55 applications.
56 The driver makes use of the video BIOS to program video modes for the
58 830M and later. This limits the video modes that can be used to those
59 provided by the video BIOS, and to those that will fit into the amount
60 of video memory that the video BIOS is aware of.
61 The following driver Options are supported
63 Option "NoAccel" "boolean"
65 Disable or enable acceleration. Default: acceleration is
66 enabled.
67 Option "SWCursor" "boolean"
69 Disable or enable software cursor. Default: software cursor is
70 disable and a hardware cursor is used for configurations where
71 the hardware cursor is available.
72 Option "ColorKey" "integer"
74 This sets the default pixel value for the YUV video overlay key.
75 Default: undefined.
76 Option "CacheLines" "integer"
78 This allows the user to change the amount of graphics memory
79 used for 2D acceleration and video. Decreasing this amount
80 leaves more for 3D textures. Increasing it can improve 2D per‐
81 formance at the expense of 3D performance. Default: depends on
82 the resolution, depth, and available video memory. The driver
83 attempts to allocate at least enough to hold two DVD-sized YUV
84 buffers by default. The default used for a specific configura‐
85 tion can be found by examining the Xorg log file.
86 Option "DRI" "boolean"
88 Disable or enable DRI support. Default: DRI is enabled for con‐
89 figurations where it is supported.
90 The following driver Options are supported for the i810 and i815
93 chipsets:
94 Option "DDC" "boolean"
96 Disable or enable DDC support. Default: enabled.
97 Option "Dac6Bit" "boolean"
99 Enable or disable 6-bits per RGB for 8-bit modes. Default:
100 8-bits per RGB for 8-bit modes.
101 Option "XvMCSurfaces" "integer"
103 This option enables XvMC. The integer parameter specifies the
104 number of surfaces to use. Valid values are 6 and 7. Default:
105 XvMC is disabled.
106 The following driver Options are supported for the 830M and later
109 chipsets:
110 Option "VBERestore" "boolean"
112 Enable or disable the use of VBE save/restore for saving and
113 restoring the initial text mode. This is disabled by default
114 because it causes lockups on some platforms. However, there are
115 some cases where it must enabled for the correct restoration of
116 the initial video mode. If you are having a problem with that,
117 try enabling this option. Default: Disabled.
118 Option "VideoKey" "integer"
120 This is the same as the "ColorKey" option described above. It
121 is provided for compatibility with most other drivers.
122 Option "XVideo" "boolean"
124 Disable or enable XVideo support. Default: XVideo is enabled
125 for configurations where it is supported.
126 Option "MonitorLayout" "anystr"
128 Allow different monitor configurations. e.g. "CRT,LFP" will con‐
129 figure a CRT on Pipe A and an LFP on Pipe B. Regardless of the
130 primary heads' pipe it is always configured as
131 "<PIPEA>,<PIPEB>". Additionally you can add different configu‐
132 rations such as "CRT+DFP,LFP" which would put a digital flat
133 panel and a CRT on pipe A, and a local flat panel on pipe B.
134 For single pipe configurations you can just specify the monitors
135 types on Pipe A, such as "CRT+DFP" which will enable the CRT and
136 DFP on Pipe A. Valid monitors are CRT, LFP, DFP, TV, CRT2,
137 LFP2, DFP2, TV2 and NONE. NOTE: Some configurations of monitor
138 types may fail, this depends on the Video BIOS and system con‐
139 figuration. Default: Not configured, and will use the current
140 head's pipe and monitor.
141 Option "Clone" "boolean"
143 Enable Clone mode on pipe B. This will setup the second head as
144 a complete mirror of the monitor attached to pipe A. NOTE:
145 Video overlay functions will not work on the second head in this
146 mode. If you require this, then use the MonitorLayout above and
147 do (as an example) "CRT+DFP,NONE" to configure both a CRT and
148 DFP on Pipe A to achieve local mirroring and disable the use of
149 this option. Default: Clone mode on pipe B is disabled.
150 Option "CloneRefresh" "integer"
152 When the Clone option is specified we can drive the second moni‐
153 tor at a different refresh rate than the primary. Default:
154 60Hz.
155 Option "CheckLid" "boolean"
157 On mobile platforms it's desirable to monitor the lid status and
158 switch the outputs accordingly when the lid is opened or closed.
159 By default this option is on, but may incur a very minor perfor‐
160 mance penalty as we need to poll a register on the card to check
161 for this activity. It can be turned off using this option. This
162 only works with the 830M, 852GM and 855GM systems. Default:
163 enabled.
164 Option "FlipPrimary" "boolean"
166 When using a dual pipe system, it may be preferable to switch
167 the primary screen to the alternate pipe to display on the other
168 monitor connection. NOTE: Using this option may cause text mode
169 to be restored incorrectly, and thus should be used with cau‐
170 tion. Default: disabled.
171 Option "DisplayInfo" "boolean"
173 It has been found that a certain BIOS call can lockup the
174 Xserver because of a problem in the Video BIOS. The log file
175 will identify if you are suffering from this problem and tell
176 you to turn this option off. Default: enabled
177 Option "DevicePresence" "boolean"
179 Tell the driver to perform an active detect of the currently
180 connected monitors. This option is useful if the monitor was not
181 connected when the machine has booted, but unfortunately it
182 doesn't always work and is extremely dependent upon the Video
183 BIOS. Default: disabled
184 Option "Rotate" "90"
186 Rotate the desktop 90 degrees counterclockwise. Other valid
187 options are 0, 90, 180 and 270 degrees. The RandR extension is
188 used for rotation functionality. So this option allows the
189 Xserver to start with a rotated mode of operation. Default: 0
190 degrees.
191 Option "LinearAlloc" "integer"
193 Allows more memory for the offscreen allocator. This usually
194 helps in situations where HDTV movies are required to play but
195 not enough offscreen memory is usually available. Set this to
196 6144 for upto 1920x1080 HDTV support. Default 0KB (off).
197
200 Xorg(1x), xorg.conf(5x), xorgconfig(1x), Xserver(1x), X(7)
201
203 Authors include: Keith Whitwell, and also Jonathan Bian, Matthew J Sot‐
204 tek, Jeff Hartmann, Mark Vojkovich, Alan Hourihane, H. J. Lu. 830M and
205 845G support reworked for XFree86 4.3 by David Dawes and Keith
206 Whitwell. 852GM, 855GM, and 865G support added by David Dawes and
207 Keith Whitwell. 915G, 915GM, 945G, 945GM, 965G, 965Q and 946GZ support
208 added by Alan Hourihane and Keith Whitwell. Dual Head, Clone and lid
209 status support added by Alan Hourihane. Textured video support for 915G
210 and later chips added by Keith Packard and Eric Anholt.
211X Version 11 xf86-video-i810 1.6.5 I810(4)