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I try to set up my printer under Ubuntu. So far it worked that I succeed to install the drivers. But Ubuntu says: No driver available for this model. This is the problem that Ubuntu doesn't recognize the right model, so I have to add and the choose the right driver manually. No problem I thought. But when I try to add a printer, I'm prompted to provide a root password although I didn't set up one? So i'm not able to confirm the dialog and add my printer, what's the reason?

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up vote 3 down vote accepted

Try to set a root password, if you realy want to log as root. In terminal type: "sudo passwd root" (without quotes).

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Thanks, this worked so far as a workaround. It was also mentioned… – NES Jan 6 '11 at 19:10
Setting a root password is considered a bad idea, also mentioned in the bug report. The gksudo solution mentioned is better. – MichielB Oct 29 '12 at 11:12

If you don't want to hassle with the root passwords you can just do: gksudo system-config-printer

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This is the best workaround. I found it was because I messed with users and groups on my system and I was not a member of the lpadmin group. To add yourself to this group you can run 'sudo usermod -aG lpadmin yourusername'. – MichielB Oct 29 '12 at 11:11

Use your normal password - the root password is disabled in ubuntu.

Normally when su is required use sudo.

You can if needed get a root shell with sudo -i

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the normal password doesn't work. – NES Jan 6 '11 at 17:51

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