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ratcheer
February 17th, 2012, 03:31 PM
My Canon MP620 printer has been working for months, I just printed some stuff on it last week. But this week, it quit. When I tried to print stuff, Ubuntu gave a warning that "Canon MP620 may not be connected" and the print jobs just queued up.

So, I removed the printer and tried to reinstall it. Here is what I got:


Installing any and all dependencies for Printing and Scanning
Configuring CUPS
dpkg: regarding libcupsys2_1.3.9-17ubuntu3.9_all.deb containing libcupsys2:
libcups2 conflicts with libcupsys2
libcupsys2 (version 1.3.9-17ubuntu3.9) is to be installed.
dpkg: error processing libcupsys2_1.3.9-17ubuntu3.9_all.deb (--install):
conflicting packages - not installing libcupsys2
Errors were encountered while processing:
libcupsys2_1.3.9-17ubuntu3.9_all.deb
Building BNJ Networking
Installing Printer Packages
Installing Scanner Packages
Restarting CUPS
restart: unrecognized service

There is some conflict among the cups modules. How to resolve?

Thank you,
Tim

ratcheer
February 17th, 2012, 03:50 PM
Apparently, this problem has been happening to various printers for several years.

My package manager shows that libcups Version: 1.5.0-8ubuntu6 is installed, and shows the following for libcupsys2:


No current or candidate version found for libcupsys2
Package: libcupsys2
State: not a real package
Provided by: libcups2

I need more help than I have found so far on the Internet.

Tim

ratcheer
February 17th, 2012, 04:03 PM
Canon (the company) does not support Linux, so I cannot get any revised driver from them. I have been trying to use the installer from MP 620 630 | Debian Based Univeral Installer | RackerUA (http://rackerua.com/2011/05/mp-620-630-debian-based-univeral-installer/) It has apparently not been updated since May, 2011. It was how I originally got the printer installed and working, but it's not working for me, now.

Tim

ratcheer
February 17th, 2012, 05:06 PM
Actually, although the page at rackerua.com has not been updated since May, 2011, the downloadable script was updated on 1/30/2012. I re-downloaded it and ran the new version. I no longer get the errors about libcups and libcupsys2.

However, I still cannot add my printer. The detection runs and does not find it.

With it attached to the PC by a USB cable, lsusb does not detect it, either. Has the printer died, or is it still a configuration issue?

Tim

ratcheer
February 17th, 2012, 10:55 PM
Can anyone help? I don't print much, but when I need to print something, I need to print it.

This printer was working just fine about a week ago. I wonder if the 3.0.0-16 kernel upgrade killed it?

Tim

ratcheer
February 17th, 2012, 11:31 PM
Bug 872711 on Launchpad seems to be the same as my problem.

Tim

ratcheer
February 17th, 2012, 11:51 PM
Ok, some brilliant guy on http://us.generation-nt.com suggested surfing to http://127.0.0.1:631 in the web browser. Amazingly, that let me set up the printer, again. However, I am back to where I was when I started this morning. When I try to print something, it queues up and never prints. And the system occasionally throws up the dialog saying the printer may not be connected.

http://us.generation-nt.com/answer/11-10-unable-set-up-printer-help-205120631.html

Also see bug 871985

Tim

ratcheer
February 20th, 2012, 05:17 PM
I finally fixed it, although I feel that the solution is weird.

I disconnected the USB cbale from the PC. I reinstalled the printer drivers, providing the LAN address of the printer. I have never had to do this before, but now the printer is printing, happily.

Tim

PS - I believe, after all the research I did trying to discover a solution, that the cause of the problem was a CUPS package upgrade.