We will fix a bug that can be complicated.
The printer management is made easy in Ubuntu. But suddenly (as things tend to happen in computer science), where we will modify the configuration of an existing printer, delete a printer or a new printer, you miss a window that tells us we are not authorized to perform this operation because the password may be incorrect. And now what?
After a few laps, I realized that I have enabled authentication Kerberos. We can see from the Web GUI cupsys, http://localhost:631 accessing and opening the Administration tab. I do not know when this authentication enabled, but the fact is that it is activated.
To solve the problem, you have to disable Kerberos authentication. To do this, run the command sudo gedit / etc / cups / cupsd.conf and remove or comment the line DefaultAuthType Negotiate. Save the changes and restart cupsys sudo with the command / etc / init.d / cupsys restart .
Problem solved.
The printer management is made easy in Ubuntu. But suddenly (as things tend to happen in computer science), where we will modify the configuration of an existing printer, delete a printer or a new printer, you miss a window that tells us we are not authorized to perform this operation because the password may be incorrect. And now what?
After a few laps, I realized that I have enabled authentication Kerberos. We can see from the Web GUI cupsys, http://localhost:631 accessing and opening the Administration tab. I do not know when this authentication enabled, but the fact is that it is activated.
To solve the problem, you have to disable Kerberos authentication. To do this, run the command sudo gedit / etc / cups / cupsd.conf and remove or comment the line DefaultAuthType Negotiate. Save the changes and restart cupsys sudo with the command / etc / init.d / cupsys restart .
Problem solved.
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