If you’re a user of Kubuntu 25.10, you can upgrade to KDE Plasma 6.5 using the Kubuntu backports PPA. The release of Kubuntu 25.10 on October 9, 2025, included KDE Plasma 6.4. However, KDE Plasma 6.5 was released shortly after on October 21, providing users with new features and improvements.
KDE Plasma 6.5 introduces several enhancements, such as automatic switching between light and dark themes, the ability to pin clipboard items, simplified Wi-Fi network connections, notifications for low printer ink, and app permission controls. While the backports PPA is managed by Kubuntu developers, it’s important to note that it is an opt-in service, meaning it’s not enabled by default. Users assume the risk of potential issues since the packages may not have undergone the same level of testing as standard offerings.
To install KDE Plasma 6.5 on Kubuntu 25.10, follow these steps:
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Check for Updates: Always update your existing system first and consider backing up important files or settings.
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Add the PPA: Open your terminal and run:
sudo add-apt-repository ppa:kubuntu-ppa/backportsAgree to add the PPA when prompted.
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Upgrade KDE Plasma: Execute the command:
sudo apt full-upgradeUsers have different opinions on whether to use
sudo apt full-upgradeorsudo apt upgrade. The former is more thorough as it resolves package dependencies even if it means removing some packages. Both commands, however, work effectively, and it’s crucial to review changes before confirming. -
Reboot: After the upgrade, reboot your system to apply all changes.
Downgrading KDE Plasma
If you decide to revert to the original version of KDE Plasma (6.4), you can use the ppa-purge tool as follows:
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Install PPA Purge:
sudo apt install ppa-purge -
Remove the PPA:
sudo ppa-purge ppa:kubuntu-ppa/backportsThis command will calculate the packages to be downgraded and prompts for your confirmation.
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Reboot: Reboot your system afterward to finalize the process.
For more information on KDE Plasma 6.5 and its features, visit the KDE Plasma 6.5 release page.