On Tue, 19 Oct 1999, dave madden wrote:
> =>My mouse is acting funny under Linux SMP.
>
> Could you compile & run the program below when your mouse isn't
> working right? It calls gettimeofday() in a tight loop and reports
> what it found once a second. You should see lines like:
>
> Tue Oct 19 09:43:15 FWD:501936/ 0:BACK ( 0us > delta > 10860us)
> Tue Oct 19 09:43:16 FWD:810266/ 0:BACK ( 0us > delta > 10809us)
>
> If you start seeing anything besides 0 in the BACK position, or a
> negative minimum delta, then we may have a similar problem. (If
> you're running xntpd, turn it off and then reboot to make sure the
> kernel's not doing a time adjustment.)
>
> I'm running 2.3.18 plus Ingo Molnar's H5 patch on a 2xPIII, RH6.1,
> with an ATI Mach64 card. When I use XF86, things seem to be stable,
> but I also have (and would like to use) XiG's accelerated server.
> When I use it, though, the mouse goes crazy after a while. (I believe
> that's caused by negative time steps, but I don't know what causes the
> negative steps.)
OK, so the Linux SMP kernel as shipped with RH can't handle
xntpd and sees the bezerko mouse/kbd problem. I sometimes have
the same problem at home as well, with a standard kernel.
I wonder if there's anybody busy hunting down the problem and
trying to fix it. Anybody interested in doing so?
(Andrea, Ingo and Alan seem to be the "usual suspects" but
everybody's welcome :))
Rik
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work at: http://www.reseau.nl/
home at: http://www.nl.linux.org/~riel/
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