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Re: deranged mouse behaviour with ibm thinkpad t31

On Sat, May 26, 2007 at 02:29:46AM +0300, Micha Feigin wrote:
> I am installing linux on a thinkpad t31. Most things work, but I think that the
> mouse is setup wrong since after playing with the mouse (it's the red point in
> the middle of the keyboard, not sure what it's called) for a few seconds to
> minutes (not consistent) it suddenly goes crazy opening windows, pressing
> buttons and flying all over the place. To release it I need to let go of the
> mouse for a couple of seconds and then it goes back to normal until the next
> time.

I think it's called a "trackpoint" officially. Unofficial names like 
"nipple", "clit" are not unheard of either :-)

I suffered that on my old Dell too - although it would not actually 
"click", just run off into a random corner/edge and refuse to come out.  

USB mice worked flawlessly, but since the mouse pointer would be 
affected by the *sum* of mouse movements, I had to compensate by weird 
(and fast) USB mouse gymnastics (which can make others doubt your 
sanity, but that's a different issue).

Sometimes this would go on for minutes, sometime for seconds. But only 
when I was using they keyboard.

Although I managed to reconfigure the mouse driver to ignore the nipple, 
things still weren't right: the nipple would "hog" the PS/2 connection 
whenever it went on the run and thus prevent my touchpad from working 
reliably.  Symptoms: "Jumpy" mouse pointer when using the touchpad, but 
USB mice worked flawlessly.

This turned out to be a hardware problem: The nipple sensor mechanism 
was hypersensitive to God-Knows-What. I suspect that moisture or old age 
finally took its toll.

My solution was to disassemble the laptop and physically disconnecting 
the wire running to it...
> I tried setting the protocol to ImPS/2 and auto which behave the same and to
> GlidePoint which doesn't function at all. device is /dev/input/mice

Does USB mice work?

Karl E. Jorgensen
karl@jorgensen.org.uk  http://www.jorgensen.org.uk/
karl@jorgensen.com     http://karl.jorgensen.com
==== Today's fortune:
It is often the case that the man who can't tell a lie thinks he is the best
judge of one.
		-- Mark Twain, "Pudd'nhead Wilson's Calendar"

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