acpi breaking synaptics mouse support on Acer Travelmate 260

[Santiago Garcia Mantinan <manty-gaW6/AuhO2xeoWH0uzbU5w@public.gmane.org>]

Hi!

I recently (the 11th) posted on lkml a message with subject "2.6.0test3
problems on Acer TravelMate 260 (ALSA,ACPIvsSynaptics,yenta)" on which I
commented all the major problems I was seing on this machine.

I have not received any replies there about the ACPI problem, so I have done
further testing and I'm posting here hoping this is a better place to give
this info, if this is not the right place please tell me where could I post
this (I'm not on the list but given the description my guess was that this
was the right place).

The machine is a PIII mobile at 1GHz with intel chipset (i82801+i830M) 256
Megs of RAM the mouse is a Synaptics touchpad. The problem is that the mouse
gets crazy (if using the normal mouse driver) or looses sync (if using the
synaptics driver). I have looked at the interrupts happening when one moves
the mouse and the number is much higher (from 3 to 10 times) in 2.6 compared
with 2.4, also when one stops moving the mouse in 2.6 the interrupts keep on
happening for half a second or so, while it stops inmediately in 2.4.

I have tested this in 2.6.0test3 and test2 with and without the latest patch
available on the acpi.sf.net site, the acpi-20030730-2.6.0-test2.diff.gz
patch, I have also tested with and without APIC, having always the same
result. The only way I found to get the mouse working ok was to fully remove
ACPI, removing only some parts of it was of no use.

Well, hope this helps to put a little bit of light on this problems, if you
need more info to track this down, you want this as a bug on the bts, or
whatever, just tell me.

Regards...
-- 
Manty/BestiaTester -> http://manty.net


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