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Running Kubuntu with the Plasma desktop, 16.04.

I have my desktop configured to 24-hour time, which is what I vastly prefer.

But when the lock screen comes on, it shows me the detested AM/PM format. This cannot stand. Yet after diligent searching, I am unable to find a solution.

Is this configurable in KDE?

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1 Answer 1

Reset to default
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Mr/Ms user26687 above hit upon the correct answer in his/her comment above, but I can't mark a comment as The One True Answer, so I will summarize the content of the referenced page at kde.org.

As a bonus, that page contains instructions for changing the date format to YYYY-DD-MM, just like God, ISO and Gary Houston intended. Wasn't even asking for that, but got it anyway. Niii-i-i-i-ice.

HOW TO:

  1. Go to the directory

    /usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components

Therein you will find a file called InfoPane.qml or in 17.04 Clock.qml. Edit it as root.

  1. Find this line:

    text: Qt.formatTime(timeSource.data["Local"]["DateTime"])

    and change it to

    text: Qt.formatTime(timeSource.data["Local"]["DateTime"], "hh:mm:ss")

  2. For the ISO date change, find this line:

    text: Qt.formatDate(timeSource.data["Local"]["DateTime"], Qt.DefaultLocaleLongDate);

    and change it to

    text: Qt.formatDate(timeSource.data["Local"]["DateTime"], "yyyy-MM-dd");

  3. Save the changes.

  4. That's it! You don't even need to log out/in, much less restart anything. Hit Ctrl+Alt+L to lock your screen and see the change immediately.

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    in Kubuntu 17.04 the file name is Clock.qml, rather than InfoPane.qml. Still works like a charm!
    – user40171
    Jul 5, 2017 at 18:20
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    If I understand it correctly, the *...* is to outline the change, but should NOT be included as part of it. I updated the file exactly as shown, and seemed to break it rather badly. (A locked screen with no place to unlock it.) Had to reboot and remove the asterisks.
    – Arrant Pedant
    Jul 18, 2018 at 19:34
  • Worked like a charm in Arch. Note I had to change the setting for Breeze theme even though I am using Breeze Dark; I suppose Breeze Dark must source Breeze somewhere along the line.
    – DBear
    Jun 2, 2022 at 15:14
  • Thanks! The only drawback you need to be aware of is that updates can revert the manual changes, as I just had to experience. So it would be better if some permanent, GUI-configurable option were added for this.
    – mara004
    Jul 18, 2022 at 12:26

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