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    SubjectRe: 2.5.X breaks PS/2 mouse
    On Mon, Oct 07, 2002 at 01:46:20PM +0100, jbradford@dial.pipex.com wrote:
    > > > Pressing the left button, then the right button, (this is complete, and follows the above immediately):
    > > >
    > > > i8042.c: 01 <- i8042 (interrupt, aux, 12) [230409]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [230410]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [230411]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [230548]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [230552]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [230554]
    > > > i8042.c: 02 <- i8042 (interrupt, aux, 12) [231505]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [231506]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [231507]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [231694]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [231695]
    > > > i8042.c: 00 <- i8042 (interrupt, aux, 12) [231696]
    > > >
    > > > So, it definitely seems to be sending data to the port... Strange...
    > >
    > > It must work. I'm really wondering why it doesn't. What happens when you
    > > load the 'evbug' module?
    >
    > I can't very easily - the kernel on the machine doesn't have kernel module support enabled, and with 4MB RAM, it's really painfully slow to work with if I use a kernel with modules enabled. If there is no other way to debug it, I can try, but it's a last resort :-)

    Do you have 'evdev' (Event interface) compiled in? It'd be a replacement
    for evbug ...

    > Something that occurred to me, and I could be totally wrong here, but
    > is it possible that the trackball is being detected as a "generic
    > mouse" when it isn't one?

    Most likely (95%) it behaves a generic ps/2 mouse. After all, it seems
    to send generic ps/2 data. Why the data isn't getting through, is the
    question.

    > I tried connecting the generic mouse, disconnecting it, and then
    > connecting the trackball, and saw in dmesg that some kind of handshake
    > was going on. This was completely different for mouse and trackball.
    > Would it be any use to post this output?

    If it was different, then definitely!

    > If the evbug module is the only way to go, I'll try it, but it'll
    > probably take me the rest of the day, (seriously) :-).

    Let's try other ways before that.

    --
    Vojtech Pavlik
    SuSE Labs
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