[cups] Printing from mobile 'phone.

[Douglas Kosovic]

It's not clear what you are using on Android, are you referring to the "CUPS Printing" print service for Android 4.4 and later ? i.e. the following :
   https://play.google.com/store/apps/details?id=io.github.benoitduffez.cupsprint
   https://github.com/BenoitDuffez/AndroidCupsPrint


Doug

> -----Original Message-----
> From: cups-bounces at cups.org [mailto:cups-bounces at cups.org] On Behalf Of
> Jim Ford
> Sent: Saturday, 10 December 2016 10:40 PM
> To: cups at cups.org
> Subject: [cups] Printing from mobile 'phone.
> 
> My printer is attached to the USB port on my Tomato router and I print to it
> from my wireless connected laptop running Xubuntu.
> 
> The printer is set up with the address: socket://192.168.1.1:9100 and the
> driver: Canon PIXMA iP7250 - CUPS+Gutenprint v5.2.11
> 
> The printer shows up with the above settings in the CUPS web interface
> localhost:631 on the laptop. It prints OK.
> 
> I'm trying to print from my Android 'phone, using the CUPS server on my laptop,
> with the IP address of the laptop, port 631. The 'phone find the printer OK and I
> can print to it - but only in the CUPS default media size setting - A4. Selecting
> different media sizes from the 'phone app makes no difference. I don't have this
> problem printing from the laptop.
> 
> The author of the 'phone app suggested that I used tcpdump to see what's
> happening. I did this, and printing from the 'phone app showed that the default
> media size was passed. I compared this with using tcpdump when printing from
> the laptop with a non-default paper size. It printed OK, but the tcpdump didn't
> show any printer activity (but maybe it was encrypted, so I could not see it).
> 
> I'm stumped and don't know where to look next - and would be grateful for any
> suggestions, please!
> 
> Jim