I just installed my canon mx870 printer through wifi like this:
- Connecting printer to router (my modem) using WPS.
- Under 16.04 (Unity Desktop at the time. Now I use XFCE but setup didn't change) I followed this procedure (I typed "mx870" instead of ip).
Wifi printing worked like a charm, but I was unable to scan (while when printer is connected to my computer through usb port scan works perfectly). The error message goes like this:
"Failed to Scan. Unable to connect to scanner".
Yet as per the documentation the printer should be able to scan through wifi..
Any idea ?