2.2.18-24 intermittent PS/2 mouse problems

2.2.18-24 intermittent PS/2 mouse problems

[Jeff V. Merkey]

Alan,

I am still seeing intermittent mouse problems with a PS2 mouse on a 
4 x PPro box with 2.2.18-24.  When the system is first powered up, 
the mouse detection is working great.  If I reboot the machine without
powering it down, about 1 in 3 times I do this, the next kernel load
fails to detect the mouse.  I have not looked at the driver to see
what state the Mouse port is in, but could.  

Is there something I could do to help you debug this problem (i.e.
is there somewhere in the kernel code I should put in some 
sanity checking to see if the mouse is being left in a good state.

Powering down the machine makes the problem go away.  Does not happen
on 2.4.0-12, BTW, just 2.2.18-24.

Jeff

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Re: 2.2.18-24 intermittent PS/2 mouse problems

[Jeff V. Merkey]

On Wed, Dec 06, 2000 at 08:10:19PM -0700, Jeff V. Merkey wrote:
> 
> 
> Alan,
> 
> I am still seeing intermittent mouse problems with a PS2 mouse on a 
> 4 x PPro box with 2.2.18-24.  When the system is first powered up, 
> the mouse detection is working great.  If I reboot the machine without
> powering it down, about 1 in 3 times I do this, the next kernel load
> fails to detect the mouse.  I have not looked at the driver to see
> what state the Mouse port is in, but could.  
> 
> Is there something I could do to help you debug this problem (i.e.
> is there somewhere in the kernel code I should put in some 
> sanity checking to see if the mouse is being left in a good state.
> 
> Powering down the machine makes the problem go away.  Does not happen
> on 2.4.0-12, BTW, just 2.2.18-24.
> 
> Jeff


Alan,

One more thing.  I was able to reproduce it once during an initial powerup
sequence by putzing with the mouse buttons while the auto-detection was going
on (generating interrupts?).  I am wondering if the problem in in the way 
interrupts are being handled for the mouse.  If I leave the mouse alone 
it seems to get autodetected properly.

Jeff
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