[sane-devel] HP4470c - OSX - USB intermittently working

[Oleg Perelet]

I've seen similar behaviors with HP & Epson scanners on OSX. Problem (in my case) was that factory scanner software launches daemons on USB hotplug that grab device (scanner).

My way of dealing with it (and use SANE) - kill HP (or Epson) daemons and anything twain ... and use SANE afterward.

Oleg.
 


--- On Mon, 5/11/09, stef <stef.dev at free.fr> wrote:

> From: stef <stef.dev at free.fr>
> Subject: Re: [sane-devel] HP4470c - OSX - USB intermittently working
> To: sane-devel at lists.alioth.debian.org
> Date: Monday, May 11, 2009, 2:01 PM
> Le Monday 11 May 2009 11:09:23 Richard Bakker, vous avez
> écrit :
> > I have the weirdest experience with SANE - OSX, USB
> and a HP4470c
> >
> > When I unplug the USB, reconnect and execute some
> tests (stripped
> > output):
> >
> > -------------------------
> > Macintosh:~ richardbakker$ sane-find-scanner
> > found USB scanner (vendor=0x03f0, product=0x0805,
> chip=rts8801/
> > rts8891) at libusb:004:003-03f0-0805-00-00
> >
> > Macintosh:~ richardbakker$ sane-find-scanner
> > found USB scanner (vendor=0x03f0, product=0x0805,
> chip=rts8801/
> > rts8891) at libusb:004:003-03f0-0805-00-00
> >
> > Macintosh:~ richardbakker$ sane-find-scanner
> > found USB scanner (vendor=0x03f0, product=0x0805,
> chip=rts8858c?) at
> > libusb:004:003-03f0-0805-00-00
> >
> > Macintosh:~ richardbakker$ scanimage -L
> > No scanners were identified.
> >
> > Macintosh:~ richardbakker$ sane-find-scanner
> >    # No USB scanners found.
> >
> >
> > -------------------------
> >
> > I can reproduce this output by unplugging the USB
> and/or power and
> > reconnect.
> > I managed once to scan using PS CS4, second scan -
> "No devices found"
> 
> 	Hello,
> 
> 	could you try the same test but with scanimage -L , with
> sane usb debug 
> enabled by running :
> SANE_DEBUG_SANEI_USB=7 scanimage -L 2>probe.log
> 
> 	And send debug logs (once compressed) either to the
> mailing list or directly 
> to me if it's too big.
> 	
> 	You may also try another USB cable or plug it in another
> port if possible.
> 
> Regards,
> 	Stef
> 
> 
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