Is it time to retire the scanner ?

Warren Block wblock at
Sat Oct 22 14:18:28 UTC 2016

On Sat, 22 Oct 2016, Manish Jain wrote:

> Hi,
> My Canon MG 2470 Pixma Multi Function Device (USB) serving purely as a
> scanner has stopped working under FreeBSD (it works under Windows XP
> still though).
> 'scanimage -L' gets stuck. The following diagnostics are available at
> the console :
> ulpt0: <Canon MG2400 series, class 0/0, rev 2.00/1.03, addr 7> on usbus7
> ulpt0: using bi-directional mode
> ata0: FAILURE - odd-sized DMA transfer attempt 5 % 2
> ata0: setting up DMA failed
> I can't be sure whether the ata0 error above is related to the Canon
> scanner, but it does look like that.

It's unlikely.  ata0 would be related IDE hardware, probably a hard 
drive.  Given that, this is likely a pretty old motherboard.

> Would it suggest that the scanner hardware has started failing ? I have
> tried disconnecting the scanner from the USB hub and connecting it
> directly to a USB port at the mainboard, but even that does not help.

If the scanner works on XP, the hardware is fine.  This is more likely a 
problem with USB and multifunction devices on FreeBSD.  It could be 

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