10-05-2014 10:46 PM
Whoever suggested to disable the iPv6 via the Other LAN settings on the printer, thank you! I disabled this and then went to Confirm WLAN settings and like magic, it now had an iPv4 IP address assigned with a subnet and router listed. Up until doing this, it always showed as blank for those fields in the WLAN confirmation screen. The wireless now works perfectly for me, yay!
10-06-2014 10:39 PM
For my printer (Canon MG6320) disabling IPv6 didn't solve the problem... which is that it won't print or scan after hours of inactivity, when connected wirelessly.
However, I seem to have stumbled on a solution. I was looking for a better workaround than turning the printer off and on (which wastes time and ink). It occurred to me to check whether the printer would wake up if one of its internal settings is modified using the printer's web interface. The printer's web interface, which can be reached by entering the printer's IPv4 address into a web browser, works even when it won't print or scan. I noticed that the printer's "Location" setting was blank, so I entered a value into that field and saved it. That caused the printer to function.
Since then, it hasn't had a problem, even after days of inactivity.
I hope this works for other people. Please post here whether or not it solves the problem for you.
10-06-2014 01:17 AM
Is there any solution? I am using the Mac OS X 10.9.5 - error messages are either no airporinter can be found or "THe Printer is off line"
I have tried power cycle....nothing is working anymore.
10-07-2014 05:48 AM - edited 10-07-2014 05:51 AM
MMGates, when you say you tried "power cycle" do you mean you turned the printer off and on, or turned the computer off and on, or turned the router off and on? I think I read that according to Canon you need to pause for about 30 seconds after you turn off the printer, before you turn it back on, to make sure it has enough time to go completely off. If that doesn't work, maybe you should try turning all three devices off and on, if you haven't tried that.
Also, did you test the solution that seems to have worked for me, which I described in the message I posted here yesterday? Can your computer's web browser access the printer's built-in web server? If so, and if the printer's web server shows that the printer's Location property is blank, enter a value into the printer's Location property (and then save the new settings). Let us know if this works for you.
You might have a different problem than the rest of us. Our printers work for awhile when we turn them on, then later after hours of inactivity they stop working (behaving as if they go offline). You say yours doesn't work at all, if I understand you correctly. If your computer's web browser can't access the printer's web server, I think you should try troubleshooting the wireless connectivity. Use the printer's built-in menu to display its settings and make sure it's still properly set up, and select the option that prints the settings (for reference later). Access your router's web server with your computer's web browser to see whether the router shows the printer is connected. Also, consider temporarily moving the printer close to the router if it's far away, and consider temporarily installing it as a USB printer to test whether the problem is something other than the wireless connection.
Also, consider contacting Canon's toll-free tech support for assistance.
10-07-2014 06:30 AM - edited 10-07-2014 06:32 AM
I'm not sure I understand Dimitrisprev's question, but here's some more information: About a week ago I used the printer's web server to enter a value into the Location property. Since then it hasn't had any problem. The longest test (the longest period of inactivity) since the change has been about 3 days. Before the change, it would stop working after hours of inactivity.
10-07-2014 08:33 AM
You're welcome, Dimitrisprev. If I understand your most recent message correctly, you're saying that your printer woke up and started working when you used your web browser to entered a value into its Location property. Please let us know if your printer continues to work okay or if the problem returns. I think a good test is to let the printer be on but unused for a couple of days to see whether the inactivity causes it to go offline again.
I posted this possible solution a few minutes ago in a very similar Canon forum titled "Pixma MG5420 WiFi connection problem." The people there have the same problem. Anyone here who still can't solve the problem might want to read all the messages there too (and subscribe to its future messages).