synaptics syndaemon 20ms polling loop

orion at cora.nwra.com orion at cora.nwra.com
Tue Mar 18 04:12:54 UTC 2008


> http://www.bughost.org/pipermail/power/2008-January/001234.html
> notes that syndaemon wakes up every 20ms (50 times a second!) to see
> if it's idle timer (nominally 2.0 seconds) has expired yet.  That's a
> little much.
>
> I'd like to apply the patch noted in the URL above (which opensuse is
> carrying), plus a patch to make it poll every 200ms, dropping the
> wakeups to 5/sec.
>
> Objections?  Patches inline below.
>

Similar problem in ksynaptic's syndaemon
(https://bugzilla.redhat.com/show_bug.cgi?id=252258).

I guess I was waiting for the perfect solution rather than just doing the
good in the mean time.  Upstream has mostly abandoned ksynaptics as well
as become unreachable via email.  However, there does seem to be some work
there on a new package "TochFreeze" that while not providing all of the
functionality of ksynaptics, does appear to be event driven instead of
polling.  See http://qsynaptics.sourceforge.net/

- Orion




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