On Thu, Aug 17, 2006 at 07:47:58PM +1000, thus spake Will Parker:
> 3) the acceleration is not great and I have it set very high but I find
> that it is not proportional horizontal vs vertical - I can sweep across
> the screen left to right in one or (sometimes) two strokes but vertical
> requires several motions and this seems wrong - I expect to be able to
> traverse the widescreen proportionally and since I like high sensitivity
> and high accel I am wondering if the trackpad will be a limitation in
> itself.

I found the appletouch support in terms of acceleration pretty bad, the first
time I tried it.  Then I fiddled a bit with the source code and came up with
the attached patch.  It seems that the resolution settings were initially
worked out for powerbooks, which have a smaller touchpad area.

This works great for me, so maybe you should try it out and why not include it
in the patch set on the repository.

-- 
I used to have a sig, but I've stopped smoking now.
--- linux/drivers/usb/input/appletouch.c        2006-07-08 16:02:17.000000000 
+0200
+++ linux-2.6.17.1-mactel/drivers/usb/input/appletouch.c        2006-06-21 
23:18:23.000000000 +0200
@@ -102,8 +102,8 @@
  *     0 <= x < 1600 on 17" Powerbooks
  *     0 <= y <  646
  */
-#define ATP_XFACT      64
-#define ATP_YFACT      43
+#define ATP_XFACT      200
+#define ATP_YFACT      200
 
 /*
  * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is
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