Article ID: 2586195 - View products that this article applies to.
Consider the following scenario:
You may find the computer wakes up 10 minutes later instead of 1 month and 10 minutes later. You may also see the following event log entry in system event log:
Log Name: System
Date: 7/14/2011 4:58:19 PM
Event ID: 1
Task Category: None
User: LOCAL SERVICE
The system has resumed from sleep.
Sleep Time: 2011-07-14T16:51:29.943417800Z
Wake Time: 2011-07-14T16:58:00.770507800Z
Wake Source: Unknown
Some platforms do not support RTC timers on monthly/yearly basis settings. If they do not, the machine may determine the wakeup time incorrectly.
Please contact the original hardware vendor to check the supportability of the RTC timers for different platforms.
According to ACPI SPEC 4.0, hardware vendors can choose to support RTC timer on monthly/yearly basis implementation. For more information please refer to the ACPI SPEC 4.0
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.
Article ID: 2586195 - Last Review: August 22, 2011 - Revision: 2.0