Re: psmouse.c: Mouse at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.

Vojtech Pavlik
2004-02-17T13:44:56Z

On Mon, Feb 16, 2004 at 03:58:20PM -0500, Ricky Beam wrote:

> On Sat, 14 Feb 2004, Michael Buesch wrote:
> >> psmouse.c: Mouse at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
> >>
> >> My mouse goes crazy for a few secs and then returns to normal for a while. Is this a 2.6.2 problem or is this is something old?
>
> I've seen this junk for many years. It's not limited to just 2.6.
>
> In my current environment, it's the KVM screwing with the mouse data...
> somehow it starts passing through 3 byte commands when the mouse is in
> 4 byte mode. I fixed it by a little trickery to force the mouse to
> reset (not a simple task from the ISR :-) BTW, 250ms is WAY to long to
> wait to detect a lose of sync; mice don't pause at all between bytes.)

Mice don't, but the kernel does, like when it's accessing the harddrive
heavily.

> >here's the fix:
> ...
>
> And exactly what is that supposed to be fixing?
>
> --Ricky

--
Vojtech Pavlik
SuSE Labs, SuSE CR