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How can I extend the USB polling period on my laptop?
John Savill
April 6, 2003
1 Min Read
A. By default, your computer's USB polling period is 1 millisecond (ms), which can sometimes cause problems--even if no USB devices are connected--when a laptop is trying to enter a hibernate state. You can extend this polling period up to 5ms by performing the following steps:
Start a registry editor (e.g., regedit.exe).
Navigate to the HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass\{36FC9E60-C465-11CF-8056-444553540000} registry subkey.
For each subkey (e.g., ...0000, ...0001), go to the Edit menu, then select New, DWORD Value.
Enter the name IdleEnable, set the value to an integer from 2 to 5, then click OK.
Close the registry editor.
Restart the machine for the change to take effect.
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