Re: Jumping cursor in modular-xorg-server-1.4.0.90nb3 (was: modular-xorg and DRM/DRI checkpoint)

[Sverre Froyen <sverre%viewmark.com@localhost>]

On Friday 04 July 2008, Joerg Sonnenberger wrote:
> On Thu, Jul 03, 2008 at 07:52:31PM -0600, Sverre Froyen wrote:
> > I've tracked the jumping cursor issue down to the function
> > acceleratePointer in dix/getevents.c.
>
> All this issues in the past happened because some very smart guys
> decided to do random broken things from signal context. Which is why
> this is extremely hard to trace down.

I still see the jumps in 1.4.2.  Perhaps my workaround (attached) could be 
included until a proper fix is developed?

Thanks,
Sverre


--- dix/getevents.c.orig        2008-07-06 13:30:32.000000000 -0600
+++ dix/getevents.c     2008-07-06 13:34:30.000000000 -0600
@@ -613,9 +613,15 @@
         clipAxis(pDev, 1, &y);
     }
     else {
-        if (flags & POINTER_ACCELERATE)
+        if (flags & POINTER_ACCELERATE) {
+            int x_in;
+            if (num_valuators >= 1)
+                x_in = valuators[0];
             acceleratePointer(pDev, first_valuator, num_valuators,
                               valuators);
+            if (num_valuators >= 1 && valuators[0] < -3000)
+                valuators[0] = x_in;
+        }
 
         if (pDev->coreEvents) {
             /* Get and convert the core pointer coordinate space into