SDDM login is glitched

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1

Guys so I just installed Arch Linux today on my laptop with wayland, sddm, and plasma
I enabled sddm.service

After I reboot sddm has many lines on it, and I cant see anything
I blindly typed my password and spammed enter and I logged in to Plasma no problems, currently typing this on the system.

How can I fix SDDM login screen?

Steps I’ve tried to fix this

Reboot, install xf86-video-amdgpu,intel, xorg (installed all group packages), xrandr, making the script below
I have a hunch my laptop display can only display in its native resolution, but connecting a external display didn’t help

# /usr/local/share/sddm/scripts/Xsetup
#!/bin/sh
xrandr -s 1920x1080

IMG_20240720_153843
IMG_20240720_1538431920×1440 208 KB

IMG_20240720_161937
IMG_20240720_1619371920×1440 157 KB

IMG_20240720_162431
IMG_20240720_1624311920×1440 228 KB

1 Like
2

Same here, but mine isn’t that bad, just a little bit.

update: I can see it happen on desktop if I turn off my monitor and turn it on again.

3

I’m not an expert on the /etc/sddm.conf.d/ file.
However, I did have to edit that file recently to disable the onboard virtual keyboard and change the argument in the file.

After reading the Arch WiKi on this file I found that:
The default configuration file for SDDM can be found at /usr/lib/sddm/sddm.conf.d/default.conf. For any changes, create configuration file(s) in /etc/sddm.conf.d/. See sddm.conf(5) for all options.

Maybe that’s a place to start?

4

It also happens on GDM and Gnome, maybe it is caused by the MESA driver?
If I disable VRR of my monitor via OSD, the problem is gone.