Re: psmouse: "bad data from KBD - bad parity" every 2ms with synaptics touchpad

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On Tue, Nov 01, 2011 at 02:34:58PM -0500, Jonathan Nieder wrote:
> Damjan Jovanovic wrote:
> 
> > Maybe that touchpad doesn't send proper parity. See what we did in commit
> > 6b9d363c49d22395d0cf8729c5963f83cfbb6d69, and try to disable parity
> > checking for that touchpad the same way?
> 
> Sure, though it would be nice to understand the problem better first.
> 
> So:
> 
>  - Arvind, could you say a little more about when this started
>    happening[1]?  Did you change your configuration, or was there any
>    upgrade around the same time (/var/log/dpkg.log* should say)?  Any
>    idea why this wasn't always happening from the start?
> 
>  - Others, any idea what information would be useful to track this
>    further?  Are there tools or patches for tracing what the kernel
>    gets told by the touchpad, so we could see the nature of these
>    parity errors?
> 
>  - Is there a dump or cache of bugzilla.kernel.org available anywhere?
>    I would like to look at bug#6105 (referred to by 6b9d363c) in case
>    it points to some hints or useful debugging tools.

I would check for spurious DKMS packages as well.

Henrik
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