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DOCUMENT:Q106373 10-NOV-1993 [W_NT]
TITLE :Troubleshooting Event Log Error Messages 11 and 12
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
--------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
-------------------------------------------------------------------
SYMPTOMS
========
When the number of mouse or keyboard events buffered internally by the
driver in nonpaged pool memory is too low, one of the following error
messages gets logged in the Event Viewer:
Source Category Event User
-----------------------------------------
Mouclass None 11 N/A
-or-
Source Category Event User
-----------------------------------------
i8042prt None 12 N/A
Both of the above error messages have the following description:
The ring buffer that stores incoming mouse data has overflowed (buffer
size is configurable through the Registry).
RESOLUTION
==========
WARNING: Using Registry Editor incorrectly can cause
serious, system-wide problems that may require you to
reinstall Windows NT to correct them. Microsoft cannot
guarantee that any problems resulting from the use of
Registry Editor can be solved. Use this tool at your own
risk.
Use the Registry Editor (REGEDT32.EXE) to edit the following entry:
HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/i8042prt/Parameters
Make the value for KeyboardDataQueueSize and/or MouseDataQueueSize
larger.
NOTE: The default value for both of these is 64.
The above service (i8042prt) name may vary, depending the type of
mouse you are using.
Additional reference words: 3.10
KBCategory:
KBSubCategory: hrdwr
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1993.