PollingIterationsMaximum

HKLM\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters

Data type Range Default value
REG_DWORD 0x400 - 0xFFFFFFFF attempts 0x2EE0 (12000 attempts)

Description

Specifies the maximum number of times Windows 2000 polls the hardware on older-style AT keyboards. If the number of trials specified in this entry is exceeded, Windows 2000 stops polling.

You might consider increasing this value if the driver does not initialize or operate correctly and the System Log in Event Viewer contains the following message from the source, i8042prt :

The operation on <driver name> timed out (time out is configurable via the Registry).

Note Image Note

Unlike some entries in this subkey, this entry remains in the Parameters subkey and is read from this location even after a keyboard is installed.

Related Entries

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