Can not authenticate form system tools

Posted by alfish on Ask Ubuntu See other posts from Ask Ubuntu or by alfish
Published on 2012-12-15T15:21:54Z Indexed on 2012/12/16 23:20 UTC
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Filed under:

12.04

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gnome

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authentication

Whenever I try to run a program from gnome, I get messages like

Authenticated is required to run the Gparted Partition Editor

The same goes for all programs that need root permission and I try to run from 'System tools' in my gnome-fallback.

However the same user can become root in gnome terminal with no problem (I added the user to sudoers). I must mention that I've changed the user's password after OS install, so I think I need to update something but don't know what. I appreciate your hints.

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