Re: Misbehaving mouse with Xorg from base.

[Andreas Wrede <andreas%planix.com@localhost>]

On Oct 30, 2008, at 17:43 , Steven M. Bellovin wrote:

> On Tue, 28 Oct 2008 07:17:36 -0400
> "Jared D. McNeill" <jmcneill%invisible.ca@localhost> wrote:
>
> > The patch from this PR ought to do the trick:
> >
> >   http://gnats.netbsd.org/39299
> >
> > Cheers,
> > Jared
> Working nicely for me, too.  Is there a corresponding fix (or a
> corresponding fix needed) for amd64?

I had the same jumping mouse problem with Gnome on amd64.  The patch  
below is (afaict) the amd64 equivalent of the patch from PR 39299 and  
it fixes the problem for me.


RCS file: /cvsroot/src/sys/arch/amd64/amd64/machdep.c,v
retrieving revision 1.102
diff -c -r1.102 machdep.c
*** sys/arch/amd64/amd64/machdep.c      21 Oct 2008 15:46:32  
-0000      1.102
--- sys/arch/amd64/amd64/machdep.c      30 Oct 2008 23:49:08 -0000
***************
*** 616,621 ****
--- 616,625 ----

        buildcontext(l, catcher, fp);

+       /* make sure we get a clean FPU */
+       fpusave_lwp(l, 0);
+       l->l_md.md_flags &= ~MDP_USEDFPU;
+
        tf->tf_rdi = sig;
        tf->tf_rsi = (uint64_t)&fp->sf_si;
        tf->tf_rdx = tf->tf_r15 = (uint64_t)&fp->sf_uc;


--
    aew

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