this post was submitted on 13 Oct 2025
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Linux

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Kubuntu - SDDM not loading (lemmy.sdf.org)
submitted 1 day ago* (last edited 1 day ago) by RubberDuckyDJ@lemmy.sdf.org to c/linux@lemmy.world
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At first Instead of my SDDM I would just see an after image of what was last displayed on screen. But if I typed in my password and pressed enter, it would let me in just fine. Then after following some suggestions from users in r/Kubuntu I’ve made a bit of progress. Now when I boot up my computer instead of the SDDM being invisible, it now doesn’t load at all, from there I switch to tty3 then back to tty2 and then log in through the terminal. After that I run startplasma-wayland and then I have access to my desktop. The post where all this went down - https://www.reddit.com/r/Kubuntu/comments/1nvreuo/sddm_not_rendering/

Does anyone know a fix? I would like to be able to see my login screen.

Here’s my specs in case that would help - https://i.imgur.com/XtC43zw.png

And here’s my journalctl output after booting and launching plasma - https://pastebin.com/nnGsWebd

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[–] noxypaws@pawb.social 2 points 19 hours ago (1 children)

long shot, but do you have a thunderbolt device plugged in? I swear my thunderbolt display fucks with my system while booting, but it could just be a specific problem with my specific display

[–] RubberDuckyDJ@lemmy.sdf.org 2 points 19 hours ago (1 children)

Actually, I do have a thunderbolt device plugged in, but I have already ruled it out as a possible cause since the issue still persists even when the thunderbolt device is not plugged in.

[–] noxypaws@pawb.social 2 points 16 hours ago

Ahh gotcha. Best of luck sorting it out!