Screen Saver Deactivates and Returns to Desktop During Battery Operation (280430)

SYMPTOMS

If the LCD Off timer is set to a longer time than the screensaver timer on a Windows 2000-based computer in battery operation mode, the screen saver may stop (which returns the screen to the desktop) and the screen saver may continue to start and stop periodically, even though you have not pressed a key or moved the mouse to activate the computer.

CAUSE

This problem can occur if you are operating a portable computer on a battery and Advanced Power Management posts the PBT_APMPOWERSTATUSCHANGE message on a regular interval. The screen saver does not stay on, but keeps recycling on and off. The screen saver also continues to reset the Power Management timer; therefore, the computer never goes into suspend mode. Windows 2000 shuts down the screen savers on all the WM_POWERBROADCAST messages that are posted.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date         Time     Version          Size    File name
   -------------------------------------------------------------
   5/25/2001   05:56p   5.0.2195.3648   130,832   Logon.scr
   5/25/2001   05:56p   5.0.2195.3648    28,432   Scrnsave.scr
   5/25/2001   05:57p   5.0.2195.3648   138,000   Ss3dfo.scr
   5/25/2001   05:56p   5.0.2195.3648    47,888   Ssbezier.scr
   5/25/2001   05:57p   5.0.2195.3648    41,744   Ssflwbox.scr
   5/25/2001   05:56p   5.0.2195.3648    38,672   Ssmarque.scr
   5/25/2001   05:57p   5.0.2195.3648   419,600   Ssmaze.scr
   5/25/2001   05:56p   5.0.2195.3648    36,624   Ssmyst.scr
   5/25/2001   05:57p   5.0.2195.3648   102,160   Sspipes.scr
   5/25/2001   05:56p   5.0.2195.3648    33,040   Ssstars.scr
   5/25/2001   05:57p   5.0.2195.3648    62,736   Sstext3d.scr

MORE INFORMATION

For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes