plasmaWayland + sddm + autologin is broken

[bonedriven]

@karlmistelberger

Autologin with wayland works like a charm:
I configured according to https://wiki.archlinux.org/title/SDDM:

6700k:~ # cat /etc/sddm.conf.d/autologin.conf
[Autologin]
User=karl
Session=plasmawayland
6700k:~ # 

6700k:~ # cat /etc/sddm.conf.d/10-wayland.conf
[Wayland]
CompositorCommand=kwin_wayland --no-lockscreen
6700k:~ # 

1. I was in X11-autolgoin
2. I disabled autologin and logout, switched session to wayland and login again.
3. I reboot and confirmed I was in wayland.
4. I created the two files under sddm.conf.d and filled in the content.
5. I reboot, finding myself not auto logged in as expected, but when I continued to login, I was in wayland.
6. Then I went to yast2-system editor to put my username in the autologin entry and reboot. I got into the same old black screen with command line login prompt as expected (by me).

@arvidjaar

What does it mean? You switch to wayland what? You switch to wayland how?

Just enabling autologin without explicitly setting suitable session will always start X11 session due to SUSE-specific patch. Have you verified that you actually start Wayland session? What is in /var/lib/sddm/state.conf? Provide screenshot of setting window and/or resulting sddm.conf.

When I reset this part of SUSE patch to default by using

[Autologin]
Session=

I get last session for the user and if it was Wayland it starts correctly. Autologin itself is enabled via /etc/sysconfig/displaymanager, not via sddm.conf. So it is not universally broken.

My way of confirming that I’m in a wayland session is to check KDE settings - About this system, it shows “Graphic platform: Wayland” (otherwise it shows “X11”). I also have several other hints that tell I’m in wayland due to the wayland exclusive bug I encounter in the session.
You have not mentioned how you turn on autologin and wayland.

ps. BTW a few weeks ago I tried wayland+autologin on my laptop running OSS 15.3, it’s the same syndrome, not working.