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

[stef]

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