Linux-kernel mailing list archive 2000-26,: Re: Parport-PS/2 mouse conflicts (2.4.0-test2)

# Re: Parport-PS/2 mouse conflicts (2.4.0-test2)

Chris Meadors (clubneon@hereintown.net)
Tue, 27 Jun 2000 08:40:30 -0400 (EDT)

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Just for fun, try changing the DMA channel of the ECP parallel from 3 to
1. And make absolutly sure nothing is trying IRQ 12.

On Tue, 27 Jun 2000, Bernd Paysan wrote:

> Hi!
>
> I've massive parport problems. When I insmod the parport module,
> everything is fine until I try to move the mouse (PS/2 mouse).
> Afterwards, mouse, keyboard, ethernet, and probably others don't respond
> anymore. I.e. I can't move the mouse, can't type in something, can't
> ping the machine, but it still accesses the HD, paints on the screen
> (clock, status meter), and even finishs printing. It's not necessary to
> print anything, just insmod and mouse movement alone does the trick.
>
> I suspected an interrupt conflict, but there's none, parport0 (part of
> the superI/O of VIA's southbridge) is IRQ 7/DMA 3 (ECP 1.9), parport1
> (dated ISA slot board, Winbond chip) is IRQ 5 (no DMA, SPP), assigned as
> "Legacy ISA" in the BIOS, and the PS/2 mouse certainly is IRQ 12.
>
> Should I use just polling IO, no DMA? Turn of IEEE status readback? Any
> other suggestions?
>
>

    --
    ...and sometimes, late at night I get these twitches.  Like dead people get.
    (Or, as I prefer to call them, perfect computer users)
                                                                     --The BOFH

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