Plasma Login Manager doesn’t start on my unsupported system

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1

I had the same issue where I installed plasma-login-manager from pacman but it didnt start

The error in journal was that qt6core needs to be 6.11 when I only had 6.10 installed, so I also agree best to wait until its released in stable

Plasma Login Manager doesn't start
2

I’m not sure why plasma-login-manager on your system would be asking for QT v6.11 when all Manjaro branches (and Arch) are on QT v6.10:

mbn info qt6-base -q | grep -Ev 'Name|Repository|Packager'
Branch         : archlinux
Version        : 6.10.2-1
Build Date     : Thu 29 Jan 2026 18:50:14 
Branch         : unstable
Version        : 6.10.2-1
Build Date     : Thu 29 Jan 2026 18:50:14 
Branch         : testing
Version        : 6.10.1-1
Build Date     : Thu 20 Nov 2025 22:00:33 
Branch         : stable
Version        : 6.10.1-1
Build Date     : Thu 20 Nov 2025 22:00:33

All Manjaro branches also have the same version of plasma-login-manager:

mbn info plasma-login-manager -q | grep -Ev 'Name|Repository|Packager'
Branch         : unstable
Version        : 6.5.91-1
Build Date     : Wed 28 Jan 2026 08:04:03 
Branch         : testing
Version        : 6.5.91-1
Build Date     : Wed 28 Jan 2026 08:04:03 
Branch         : stable
Version        : 6.5.91-1
Build Date     : Wed 28 Jan 2026 08:04:03

It’s running fine on my Testing branch system with the above package versions installed.

3

hmm thats weird, yes I am on arch and got PLM from the kde-unstable branch, I can see that in kde-unstable qt6 packages are 6.11 but weird that its working for you on 6.10 edit: i think with KDE they want you to either use everything unstable or stable not mix and match, i actually had PLM-git installed last week and it worked! but when updating it was saying kde framework 6.6 is required

5

plasma-login-manager doesn’t actually exist in the Arch Stable repos, as it is meant for Plasma 6.6, which will be released on the 17th of February. So Arch only have it in KDE-Unstable branch as version 6.5.91-1.

Plasma 6.5.91 is the 2nd beta release of Plasma 6.6, which (I assume) is built with QT 6.11.

However, Manjaro has backported the plasma-login-manager (thanks @Yochanan :smiley:) so that it works with Plasma 6.5, which is built with QT 6.10.

6

oh ok, sorry I shouldnt have posted in here with arch

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