Spurious mouse events (Was Re: Periodic ISR wastes 30 % of the CPU)

Thought I’d let you know that slowing down the mouse appears to have
cleared the problem. My thanks to Miguel Monteiro for the solution and
all the other kind replies.

Now who knows how to resurrect a ceased to respond mouse (without a
reboot)?

Cheers

Don Sharp

Miguel Monteiro wrote:

Hi Don, Dave,

Try this: go to
Start>Settings>Control Panel>Display>Settings>Advanced>Troubleshooting

and move the “Hardware acceleration” slider down towards “None”. If the
problem goes away, repeat the process by moving the slider up one
position
each time, to find out the rightmost slider position allowing your mouse
driver
to work fine… (one position less than “Full” could work - it simply
disables
cursor and bitmap accelerations).

If it works, don’t ask me why. I simply came up across a similar problem
a
few months back and found up this workaround… :wink: I think the problem
had
something to do with a cheap video card (might NOT be your case, of
course).

Miguel Monteiro
xxxxx@criticalsoftware.com
www.criticalsoftware.com

«Humour and love are God’s answers
to Human weaknesses»

----- Original Message -----
From: “Don Sharp”
> To: “NT Developers Interest List”
> Sent: Wednesday, May 02, 2001 7:16 AM
> Subject: [ntdev] Re: Periodic ISR wastes 30 % of the CPU
>
> Dave Harvey wrote:
> >
> > I’ve got this problem that has occurred twice, where the mouse starts
> to get
> > jumpy, and perfmon shows a sawtooth that repeats every two-three
> seconds
> > where the average CPU time is about 30%, and its all ISR time.
> >
> > This WIn2K Server.
> >
>
> I am seeing this on one of my systems running NTSP4. There seem to be
> large numbers of random mouse events, windows opening, menu items
> selected etc. Virus scan claims no viruses present.
>
> Mouse software is Microsoft IntelliPoint.
>
> On the same lines, prolonged mouse inactivity sometimes results in the
> mouse being frozen.
>
> Help, suggestions (polite :sunglasses: ) and solutions gratefully received.
>
> Cheers
>
> Don Sharp
>
> > I kill off all the processes I can, disconnect all external cables,
> pop-out all CDs,
> > shutdown every service that can be shutdown, and I still get the same
> > behavior. Rebooting clears it.
> >
> > How can I track down which ISR it is in so I have some hope of
> figuring out what is going on?
> >
> > -DH
> >
> > ----------------------------------------------------------------------
> ------------------------------------
> > Dave Harvey, System Software Solutions, Inc.
> > 617-964-7039, FAX 208-361-9395, xxxxx@syssoftsol.com,
> http://www.syssoftsol.com
> > Creators of RedunDisks - Robust RAID 1 for embedded systems.
> >
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