How to prevent Muon from asking a password when installing updates?

Adding user ALL=(ALL) NOPASSWD: ALL to sudoers does not help. sudo apt-get upgrade works without a password, but Muon is still asking for it.

It is very annoying to enter password every day to install updates.

(Kubuntu 12.04)

  • I believe this is perfectly possible if the PolicyKit Authorization Manager was packaged up for Ubuntu. However... Where is the KDE PolicyKit Authorization manager in Kubuntu?
    – gertvdijk
    Feb 1, 2013 at 14:24
  • At the risk of not answering your question properly .. Its a VERY good idea to review the updates being applied to your system. Even a glance at what has been changed cuts down alot of pain if something subsequently goes wrong. you can create a script and add it to crontab as stated here in another reply. add the lines apt-get update apt-get -y dist-upgrade >> /root/myautoupdate.log Least that way you can review the updates or tail -f /root/myautoupdate.log to see them happening
    – rupert
    Mar 28, 2013 at 4:33

2 Answers 2


try with configuring your crontab file, to make updates automatically, as root user, example:

in terminal write (as root loged user):

nano /etc/crontab

Then, for example, if you want updates every single day to perform at for example 14:30 o'clock at end of that file write:

30 14 * * * root apt-get update

and simply save changes.

That can help, and to don't worry about everyday updates, as it do that automatically at given time and given user and given command.

  • This does not answer the original question. All this does is update the apt database with the newest package information. No new packages are installed as the OP asked how to install updates without a password prompt specifically in Muon. I am searching for the same answer since Muon is a pain for privilege escalation.
    – Jeremy
    Mar 4, 2020 at 13:39

Tested with Kubuntu 20.10:

Create a file /etc/polkit-1/localauthority/50-local.d/10-local-permissions.pkla

(note that directory /etc/polkit-1/localauthority has root-only read permission and must remain that way)


[My Muon Permissions]

[My Discover Permissions]

That's it. The first section lets Muon install packages without asking for a password and the second section does the same for updates that are prompted by the "updates" system tray icon. It's a good idea to glance through the updates before clicking "install", though.

  • Where, pray tell, are the action values documented? How can I identify another program? Jan 17, 2022 at 11:23
  • @HiTechHiTouch. I read through the polkit configuration files in /usr/share/polkit-1/actions. Most XML files there contains useful <description> lines adjacent to the <action> lines. You can also start an app that requires your password and then see what is in /var/log/auth.log
    – Dave Rove
    Feb 10, 2022 at 20:54

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