2010年4月21日

Dwm.exe のエラーを解決した

ukは Windows 7 を使ってるよ。
そして、二つのディスプレイでそれぞれFlashが含まれたページをブラウザで見てるとわりと無視できない確率でDwm.exeが落ちて、「デスクトップ ウィンドウ マネージャー は動作を停止したため、閉じられました」なんて言われてたよ。
他にもIE8だったりrundll32.exeだったりsvchost.exeだったりも何かが原因でAppCrashしてたよ。
デュアルディスプレイ環境がダメなのかとか、ディスプレイドライバ周りがダメなのかとか疑ってみたりしたけど問題はなさそうで困ってた。
何が原因かもわからずにWindows 7は所詮こんなもんだと思ってたところ、偶然次のような情報を発見した!

世界は栃木県から半径100km圏内 - BIOS HPET・・・Windows7 DWMが不安定な原因!!!(トラバれないので直リンク)

解決法は、BIOSの設定から、"HPET Support"を"Disable"にするだけ!
ずいぶん後ろ向きな解決法だ!!

ukのマザーボード ASUS M2A-VM HDMI でも、Disableにして3週間経つのにまだ一度も落ちてない!
ありがとうありがとう!DWMエラーはもう出ない!

もう少し調べてみたところ、このマザーボードはHPETをEnableにしてるとLinuxなんかにも悪さをするらしい。どうやらチップセットのAMD 690Gが黒幕!

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