Ubuntu 24.04+KDE

New Framework customer here and a long time KDE user. Ubuntu 24.04 installs and works fine but both Kubuntu 24.04 and Ubuntu with the kde-full package installed hang after reboot. I assume sddm is failing in some way (blank screen). gdm3 only lets me log in to a Gnome environment. Any ideas?

It’s probably a race condition with SDDM and simple DRM. We saw the same thing with gdm last year.

Here’s more details:

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Thanks! Is gdm3 or lightdm a possible solution?

Yeah using gdm will work. There are also other workarounds posted to that series of bugs you can try if you want to stick with SDDM.

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Has someone put together a list of instructions for plasma in gdm3?