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Laptop Ps/2 Keyboard And Mouse Hesitation


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#1 jeb5000

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Posted 06 April 2008 - 07:24 PM

newbie unsure of site protocol...please forgive and straighten me out if necessary...am experiencing hesitation in using onboard keyboard and mouse of Presario 2100 but a USB keyboard works fine. Haven't got a USB mouse to test. Plugged an external PS/2 mouse into side jack and this also hesitates or skips or "is jumpy" when sweeping mouse across screen. Tried various settings to adjust Synaptics mouse pad, like unchecking Fast Initialization, but nothing seems to stop the hesitation except using the USB keyboard which fixes the keyboard hesitation. CPU is bouncing between 1% and 20% creating a vertically zigzag line in the performance tab of Task Manager; for a brief moment in all my messing around, this usage problem stopped and the keyboard and mouse hesitation stopped..but the problem came back next I looked at it. AVG first came back after full scan with shell32 and host listed under column "changed"...date and size were same as my other machine...switched to Anti-VIR but it found no problems; CCleaner didn't fix it either. CHKDSK found nothing. Problem exists in safe mode as well. I reseated the onboard keyboard cable which popped out when I opened up the laptop, bu the problem continues. I figure I have a bad PS/2 port or something else is polling or otherwise eating CPU and interfering with PS/2 keyboard and PS/2 mice (whether Synaptic or external). Have HIJack this log generated, but I cannot distinguish what might be wrong. This machine had a hard drive failure and replacement but the user said she never used it after it came back from repair service, and does not remember there being a hesitation problem. Any takers? --Jeb5000

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#2 Budapest

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Posted 06 April 2008 - 08:01 PM

What process is taking up the CPU when it "bounces"?
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#3 garmanma

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Posted 06 April 2008 - 08:24 PM

I reseated the onboard keyboard cable which popped out when I opened up the laptop, bu the problem continues.

They can be tricky to seat correctly. My big clumsey fingers always get in the way. You're engaging the little latch / clamp, correct?
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#4 jeb5000

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Posted 09 April 2008 - 09:24 PM

I couldn't see any corresponding spike/decline in usage just by watching the memusage in TaskManager. Problem went away again upon reboot. I expect I'll see it again and be able to test further. ...Stinkin' ram is only 133MHz, too. --jeb5000

#5 jeb5000

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Posted 20 April 2008 - 05:52 PM

Ha! After lengthy searching, I Googled mouse JUMPY and stumbled onto TOMSHARDWARE.com or something like that and some very clever contributor said, in response to someone else with the same problem, REMOVE THE DEAD BATTERY...That fixed it just fine. I wonder why a dead battery would interfere with the onboard mouse pad and keyboard but not a USB keyboard. Something to do with polling and speed of response? -- the case, she is SOL-VED. Thanks for all considerations -- jeb5000




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