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      Battery drains more quickly than expected - ThinkPad T60, T60p, X60, X60s

      ThinkPad systems running Microsoft Windows XP with the Core Duo processor may experience shorter battery life then expected. Microsoft has defined this problem in Knowledge Base article 918005 as follows:

      The portable computer cannot enter the deeper Advanced Configuration and Power Interface (ACPI) processor idle sleep states. This occurs when the USB 2.0 driver leaves the asynchronous scheduler component running continuously. This prevents the processor from entering the deeper ACPI processor idle sleep states, or C-states. C-states save power when the processor is not busy. These states range from C0 to C3 or C4. Typically, an idle portable computer uses the C3 and C4 states to preserve battery power. If an idle portable computer cannot enter or maintain the C3 or C4 states, the battery power drains more quickly.

      Affected configurations
      The following ThinkPad systems running Windows XP may be affected by this symptom:
      • ThinkPad T60, T60p
      • ThinkPad X60, X60s

      Download the Microsoft fix at:


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      • Alias ID: MIGR-67028
      • Document ID: HT004174
      • Letztes Update :17 Jun 2014
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