作者Vincent Huang

我用 google 找了一下資料
http://mpet.multiservers.com/VC_Theory.html
http://mpet.multiservers.com/vc_freezes.html
其中vc_freezes.html 最後有提到
Since there's a significant difference in power consumption between running (40-60W) and low power state (~5W) the power supply might be unable to keep the voltages stable with the changing currents.
非官方文件，不過簡單明瞭 ^^