查看完整版本: Mac OS X 10.2 造成的Powerbook风扇BUG问题解决

Mac OS X 10.2 造成的Powerbook风扇BUG问题解决

【移动新人[wiki]类[/wiki][wiki]新闻[/wiki]】有不少第一代12英寸PowerBookG4的用户在安装了最新的MacOSX10.3.2版操作[wiki]系统[/wiki]之后发现，他们的PowerBook出现在插电之后不久散热风扇便激活转个不停。
　　针对这个问题，今天有一个德国[wiki]网站[/wiki]贴出了修补的指引：您可以利用苹果在网上贴出的MacOSX10.2.8[wiki]软件[/wiki]更新档案去分离出旧版本的风扇控制[wiki]程序[/wiki]，去盖掉MacOSX10.3.2里的版本。有需要的朋友可以看看如下：

MacOSX10.3.2PowerBookFanHack
Update
Igottheextensionsmixedup.It'sAppleADM103x,notAppleADT746x.Ifyoucamehereonthe20thor21stofDecemberandthehackdidn'tworkforyou,tryagainwiththecorrectextension.Sorry.
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Disclaimer
Onlydothisifyouknowwhatyou'redoing.I'mnotresponsiblefordamagetoyoursystem,burnedpalmsorexplodingPowerBooks.Youhavebeenwarned.
Theproblem
InMacOSX10.3.2afewSystemExtensionshandlingthetemperaturereadoutandthefancontrolhavebeenchanged.Tobemoreprecise,thefanturnsonwhentheCPUtemperaturereaches51degreesC(64before)andturnsoffagainwhenitfallsbelow47degrees(57before).Asaresult,onsomePowerBooksthefandoesnotturnoffatallaftertheupdate,mostnotablythePowerBook12".Thismightbejustabug,butprobablyit'sApple'sanswertothetemperatureproblemsthesemodelshave(inhotweather,thepalmrestgetstoohottotouch).
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Thefix
DowngradetherelevantSystemExtension.Itturnedouttobe:/System/Library/Extensions/AppleADM103x.kextThisextensionhandlesthetemperaturereadoutfromcertainAnalogDevicesDigitalThermometersovertheI2Cbus.
First,makeabackupoftheversionthatisincludedin10.3.2.
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TheoldversionfortheExtensioncanbefoundinthe[b][u]standaloneupdater10.2.8[/u][/b].Don'truntheupdater(orquitifitlaunchesautomatically).
Extracttheextension.ToextractsinglefilesformthePackage,getsomethinglike[b][u]Pacifist[/u][/b]orusethe[wiki]shell[/wiki].
Copytheextensioninto/System/Library/Extensions.
Makesurethattheowneroftheextensionandeverythinginside(it'sapackageandpackagesaredirectories)isrootandthegroupiswheel.THISISIMPORTANT.Otherwise,thesystemwon'tloadtheseextensions,whichmayhavesevereconsequences.TheFinderdisplaystheownerrootassystem,sothisisokaswell.
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Reboot.
EnjoytheSilence.(andputonyourasbestosglovesagain)
Comments?[b][u]Goahead.[/u][/b]

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