Dell Latitude Latitude LT System User Manual page 47

Disabling Power Management
In the Setup Utility
1. In the Power menu, set Power Management Function to Enabled.
2. Set Hard Disk Power Down after, Video Power Down after and Auto Suspend
to Disabled.
3. Set Power Management Function to Disabled.
When you are using communication software or if sound or voice pauses
or skips while played back, disable power management.
Battery and Power Management 3-11