我有一个星期没开机,今天一开,整个桌面大小分辨率都变了,多了一个兰色的小窗口图标，显示intel extreme graphi,刚装机时有过这个图标，后来没了．望高手解答
全部答案（共3个回答）
驱动的一个设置用的程序
一般在注册表启动键值自动加载
没有了的话可能是由于用了优化大师超级兔子一类的工具清理过开机启动文件
找显卡驱动重新装就可以了
是intel系列主板集成的显卡芯片
Intel(R) Extreme Graphics 2 for Mobile 是笔记本电脑集成的移动版芯片
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这个不是我熟悉的地区By Henry, on July 13th, 2012
Graphics acceleration (Core Image, Quartz Extreme) for Intel HD Graphics 4000 (on Ivy Bridge processors) works in Mac OS X! The drivers are included in the , Lion 10.7.5, or Mountain Lion 10.8. (Also found in ).
AppleIntelGraphicsHD4000.kext
AppleIntelGraphicsFramebufferCapri.kext
…and maybe some others I don’t know about
As pointed out by
and , the critical bit missing to get the HD4000 drivers to load is the AAPL,ig-platform-id device property for the graphics device. Of course, on anything other than Apple hardware, this property wouldn’t exist, and would need to be added.
The AAPL,ig-platform-id property is a 32-bit number that must be one of the values listed in the following table. Thanks to
for figuring it out.
AAPL,ig-platform-id
Memory (MB)
No display
No display
The value of AAPL,ig-platform-id selects which graphics configuration the driver will use (er, blindly assume). Setting AAPL,ig-platform-id to any of the 12 values will load the HD4000 driver, but there are some other constraints.
First, the setting affects which ports are enabled. Configurations with zero ports should be avoided (no output?). Configurations with just one port should probably be avoided because it’s probably not the port you’re looking for. On my GA-Z77M-D3H, for configurations with one port, the enabled port is not the DVI port. For configurations with two or more ports, DVI was available. The VGA port is not enabled for any of the configurations. I did not test the HDMI port.
Also, the graphics memory size for the configuration must match the setting in BIOS. If they don’t match, the driver may crash (kernel panic at gen7_memory.cpp:721), or the display may be corrupted. For example, using configuration 0x (96 MB, 3 pipes, 4 ports), set the Graphics Memory Size to 96 MB to match. It appears that OS X doesn’t obey the DVMT Total Memory Size setting (always 512 MB with 8 GB system RAM), so I just left it as MAX to match.
| +-o GFX0@2
"assigned-addresses" =
"IOInterruptSpecifiers" = (,)
"class-code" =
"IODeviceMemory" = (({"address"=,"length"=4194304}),({"address"=,"length"=}),"IOSubMemoryDescriptor is not serializable")
"AAPL,gray-page" =
"IOHibernateState" =
"IOPowerManagement" = {"MaxPowerState"=2,"ChildrenPowerState"=2,"CurrentPowerState"=2}
"subsystem-vendor-id" =
"built-in" =
"acpi-device" = "IOACPIPlatformDevice is not serializable"
"IOPCIMSIMode" = Yes
"IOInterruptControllers" = ("io-apic-0","IOPCIMessagedInterruptController")
"name" = "display"
"vendor-id" =
"device-id" =
"IOPCIResourced" = Yes
"compatible" =
"AAPL,iokit-ndrv" =
"acpi-path" = "IOACPIPlane:/_SB/PCI0@0/GFX0@20000"
"subsystem-id" =
"revision-id" =
"AAPL,ig-platform-id" =
"AAPL,gray-value" =
"pcidebug" = "0:2:0"
"IOName" = "display"
"device_type" =
ioreg -l -p IODeviceTree can be used to verify that the device property was correctly added to the list of properties for the graphics device. The end result is that the AAPL,ig-platform-id property shows up in ioreg output. A correct value causes AppleIntelGraphicsHD4000.kext to load.
Setting AAPL,ig-platform-id
The goal is to inject a device property named AAPL,ig-platform-id with a 32-bit value that is one of the table entries (e.g., ). There are many ways to inject a device property, and I know very few of them. The method I used was to modify the Chameleon bootloader’s GraphicsEnabler code to add the property whenever GraphicsEnabler=y (gma.c). Here are a few options I’ve heard of:
Modify the bootloader’s GraphicsEnabler code. I modified Chimera 1.10 (rev 1999, i386/libsaio/gma.c) to add a new device property value.
Device property injection by the bootloader using “device-properties” in org.chameleon.Boot.plist. I don’t know how to generate such a string, but there are a few examples posted in . Something about gfxutil.
Editing the DSDT to add the property for the graphics device.
Modifying the Chameleon Boot Loader
I chose to modify the GraphicsEnabler code from the Chameleon/Chimera bootloader. The patches below can be applied to the source code from svn (http://forge.voodooprojects.org/svn/chameleon). I’ve also compiled patched versions of Chameleon (rev. 2012) and Chimera (rev. 1999) for convenience.
Chameleon svn r2012
Update July 20, 2012: Chimera 1.11
has been updated with something similar to what’s described here (AAPL,ig-platform-id set to
and device-id set to 0166).
Chimera 1.10.0
Settings that don’t matter
It appears that AAPL,ig-platform-id is the only critical setting to enable hardware acceleration. I’ve tried changing a few other things and none of them seem to matter.
device-id and revision. The driver doesn’t care whether this is mobile (0166) or desktop (0162). I suspect it needs to be one of the two in order to load the kext, but it’s not important to match it with the high-order 16 bits of AAPL,ig-platform-id. I left mine unchanged at
using configuration .
GFX0 vs. IGPU in DSDT. This doesn’t seem to matter either. Both work the same, so I left mine as GFX0 without issues.
SMBios version/productname. I tried a few, and also tried without smbios.plist. The driver loaded fine in all cases. (Mac Pro, iMac, MacBook Pro were all ok)
Settings that do matter
AAPL,ig-platform-id. Yes, it matters.
Graphics memory size in BIOS. This must match the amount of graphics memory for the chosen configuration.
Connectors. Not all output connectors are enabled. Getting a garbled display could be a symptom the connector currently used is disabled. Changing the value of AAPL,ig-platform-id might change which connectors are enabled/disabled.
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