This week, we’d like to highlight PC Insomnia. PC Insomnia occurs when a PC does not consistently transition to a lower power state due to application nuances, or spurious network, central processing unit (CPU) or disk activity. Some common causes of PC Insomnia include:
- Environment: Numerous services or agents within a PC image of an enterprise may spike the CPU utilization during periods of inactivity causing the Microsoft Windows® Idle Timer to reset.
- Custom Device Drivers: Device drivers not written to the Advanced Configuration & Power Interface (ACPI) specification may not allow the PC to enter lower power states.
- Screen Savers: Some intensive screen savers may require higher CPU utilization causing the Windows® Idle Timer to reset.
- Applications: Terminal emulation software, media players, and some custom-developed applications may not allow the system to enter a lower power state.
- System Configuration: Some PCs may not have their BIOS configured correctly to allow for system standby or the power state known as S3 or Sleep (ACPI specification).
As a result of PC Insomnia, PCs stay on while not in use and subsequently waste energy and result in increased CO2 emissions.
*Windows is a registered trademark of Microsoft Corporation in the United States and other countries.