[Sugar-devel] XO-1 touchpad [EduJAM day 2 Tour of Uruguay; Sugar-devel Digest, Vol 31, Issue 6]
pgf at laptop.org
Tue May 3 10:50:28 EDT 2011
> I was loging serio-related messages for some time.
> Post os802/2.6.25-kernel builds on the XO-1 have a considerable higher
> frequency of miscalibration symptoms (mostly big jumps and soft packet spews).
> This is true for both fedora and non-fedora builds and although the automatic
> recalibration is a big step forward they are still user-noticeable and very
> On average they occur every 5 minutes (though the frequency may vary) and quite
> often are staggered (2-3 events in a minute).
> The frequency appears to be unrelated to the system load or specific
> Though I never really checked, I have the _sense_ that the frequency may also
> increase in very low memory conditions.
> Interestingly they almost never happen the first 10 minutes after boot.
> So it may be a function of time.
> Power-cycling the touchpad and recalibrating every 7 minutes appears to
> decrease the spontaneous miscalibration symptoms to ~1/hour.
> Of course scheduled recalibrations are equally disruptive for the user.
> However, I think it may points to an underlaying problem that accumulates over
> time (leak of some sort ?).
> This may not be directly related to the new driver, but could be related to the
> EC code or the kernel configuration or something else, though I'm afraid I have
> no idea how to test further.
yioryos -- could you perhaps publish your logs, if you still have them?
i can't remember if there's still an appropriate trac ticket open -- if
not, create a new one.
paul fox, pgf at laptop.org
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