Re: [PARPORT] incorrect detection of printer

From: stef (svoltz@wanadoo.fr)
Date: Sun Mar 18 2001 - 08:02:37 EST

  • Next message: Uwe Bonnes: "[PARPORT] Probing for Super-IO Chips in parport_pc"

    On Sat, Mar 17, 2001 at 01:50:29PM -0500, Tim Waugh wrote:
    > On Sat, Mar 17, 2001 at 06:59:17PM +0100, stef wrote:
    >
    > > parport0: No more nibble data (0 bytes)
    > > parport0: faking semi-colon
    >
    > *sigh*, another manufacturer who gets this wrong..
    >
    > > parport0 probe: warning, class 'IMAGE' not understood.
    >
    > It's supposed to be 'SCANNER', but it doesn't much matter.
    >
    > > parport0 (addr 0): Unknown device, UMAX Astra 1220P
    > > parport0 (addr 1): Printer, EPSON Stylus COLOR 440
    > > parport0 (addr 2): Printer, EPSON Stylus COLOR 440
    > > parport0 (addr 3): Printer, EPSON Stylus COLOR 440
    > > parport0: Printer, EPSON Stylus COLOR 440
    > > lp0: using parport0 (interrupt-driven).
    > >
    > > My printer is detected 3 times
    >
    > Actually four times: at daisy chain addresses 1, 2, and 3, and also as
    > a non-chain-aware device.
    >
    > > It is harmless since the printer and scanner work correctly.
    >
    > Yes, but annoying, and eventually there may be drivers that actually
    > want to look at this information.
    >
    > I guess this is the scanner's fault, since a ZIP250 with chained Epson
    > Stylus colour 760 is reported correctly.
    >
    > Not that I expect it to make any difference, but if you leave off
    > 'reset=1', does that make any difference?
    >
            No it doesn't make any difference. But on first load after boot the
    detection is ok:

    parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE,EPP]
    parport0: Found 1 daisy-chained devices
    parport0: No more nibble data (0 bytes)
    parport0: faking semi-colon
    parport0 probe: warning, class 'IMAGE' not understood.
    parport0 (addr 0): Unknown device, UMAX Astra 1220P
    parport0: Printer, EPSON Stylus COLOR 440
    lp0: using parport0 (interrupt-driven).

            Then if the modules are unloaded, then loaded again, I have again 3 ghosts
    printers.

    Regards,
            Stef

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