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Using 12.04 my printer a canon ip2600 will not print.

SystemSettings/printers shows it as installed, connected to local host, enabled, accepting jobs, shared and allowing printing for everyone. Yet it does not print.

I have tried to remove it but get a request for user name and password which I enter (I only have one password) but the password is listed as incorrect.

I need a sudo command which I can use to delete the printer so I can attempt to re-install it. As it is the printer is useless and I can not even uninstall it.

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How are you trying to remove it? Are you using the command line or a GUI method? – Lucio Apr 14 '13 at 21:35
I tried uninstall using GUI but it will not accept my password. I need a sudo command. – msanderz Apr 14 '13 at 21:42
But are you a sudo user? Because, you need enter a sudo password. If the GUI method doesn't work, the command line neither – Lucio Apr 14 '13 at 22:01
To further clarify: I am the only user of this computer. When I enter a sudo command I enter my password, as requested, and the command executes. However the SystemSettingg/printers GUI rejects my user name and password. – msanderz Apr 14 '13 at 22:17
Somewhat solved. OKAY, I added myself to group lpadmin and was able to delete the printer with the GUI. Now I have NO printer installed. Next I will try to reinstall the Canon printer, but not today. Enough fiddling, it is time for a coffee break. – msanderz Apr 14 '13 at 23:00

I solved the problem by adding my user name to the "lpadmin" group. Since I somehow was not in that group I was not allowed to change anything related to the printer. Once I was in the group I was able to delete the printer. Now all I have to do is re-install the printer.

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