Ubuntu: Muon updater - This operation cannot continue since proper authorization was not provided

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https://rtfm.co.ua/wp-content/uploads/2016/03/ubuntu-logo-icon.png Ubuntu: Muon updater - This operation cannot continue since proper authorization was not provided
При запуске Muon Update Manager в Ubuntu 14.04 - он останавливается с ошибкой:
"This operation cannot continue since proper authorization was not provided"

Проверяем наличие пакета polkit-kde-1:
$ dpkg -l | grep polkit-kde-1
ii polkit-kde-1 0.99.1-1 amd64 KDE dialo
https://rtfm.co.ua/ubuntu-muon-updater-this-operation-cannot-continue-since-proper-authorization-was-not-provided/