PRB: Standby Power State Not Supported in Windows 98

ID: Q190524

The information in this article applies to:

• Microsoft Win32 Device Driver Kit (DDK) for Windows 98

SYMPTOMS

Windows 98 does not allow the system to enter a "standby" power state. Instead, the system might enter a "suspend" power state.

CAUSE

Windows 98 does not support the "standby" power state. If the BIOS requests standby, Windows 98 rejects the standby request and sets the system power state to suspend if suspend is supported.

STATUS

This behavior is by design.

MORE INFORMATION

According to section 4.3.1 of the Advanced Power Management 1.2 specification, event code 1 is for standby requests. Windows 95 attempts to set the system power state to standby when handling this BIOS event request. However, Windows 98 rejects a standby request and attempts to suspend the system if suspend is supported.

Additional query words:

Keywords          : kbDDK kbWinOS98 
Issue type        : kbprb

Last Reviewed: August 5, 1998