Re: [Gimp-print-devel] Canon ip3500 Series Experimental driver debug info

[Gernot H. <aik...@gm...>]

On Thu, Jul 4, 2019 at 5:29 AM Vincent P Renaud <vin...@gm...>
wrote:

> Hello,
>
> I have a Canon ip3500 Series and used the driver provided by you awesome
> people of gutenprint.
> I'm running this on a Raspeberry Pi as a printer/scanner/pi Hole server.
>

Hi Vince,
Thanks for the report. Very interesting. Glad you are able to use the
iP3500 on your system.
Never had any such report before though (and the printer has been supported
for many years).


> Here's some debug information about how I got the printer driver for Canon
> ip3500Series to work:
> I had to set my USB to unidrectional using the following commands:
> lpadmin -p Canon_ip3500_series -o usb-unidir-default=true
> lpadmin -p Canon_ip3500_series -o usb-no-reattach-default=true
>
> Without those two, my printer would hang halfway on the incomplete jobs
> and would need a hard reboot.
> I hope this can be of help for some experimental drivers as it's probably
> as "feature" with some Canon models.
>

Could be something to do with the linux or Rasberry Pi USB library, not
sure though.
Do you have any other older Canon printers. I have/use a MP450 and this has
been quite good, although also some hangups very occasionally in the past.
I can try and see if these options have any effect on the current working
state of my MP450.

I don't know if this option is available in CUPS (do you use CUPS on
Rasberry Pi?) and whether we should include such a workaround/suggestion to
users in the gutenprint install/readme files.
Worth discussing though.

Best regards,
Gernot Hassenpflug