I installed Debian Jessie without a desktop environment and installed i3wm afterwards. If I start an application which requires administrative privileges inside i3wm other than by running the command in a terminal (e.g. through dmenu) a GUI password prompt pops up saying:

APPLICATION needs administrative privileges. Please enter your password.

However, no matter what I put in there and no matter whether I chose Save for this session or Save in the keyring it always displays Incorrect password ... try again.

What do?


I solved it by opening gksu-properties and setting Authentication mode to sudo instead of su.

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