Bug 1215403 - SDDM default display-manager cannot login to X11 desktop
Summary: SDDM default display-manager cannot login to X11 desktop
Status: NEW
Alias: None
Product: openSUSE Tumbleweed
Classification: openSUSE
Component: KDE Workspace (Plasma) (show other bugs)
Version: Current
Hardware: x86-64 openSUSE Tumbleweed
: P3 - Medium : Normal (vote)
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Assignee: E-Mail List
QA Contact: E-mail List
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Reported: 2023-09-16 11:40 UTC by Alastair Budge-Reid
Modified: 2023-09-21 08:35 UTC (History)
3 users (show)

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Found By: Community User
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Description Alastair Budge-Reid 2023-09-16 11:40:42 UTC 
With TW as OS and KDE desktop, when running SDDM as default-displaymanager after boot login will only work with Plasma (Wayland) desktop.  Selecting X11 and logging in goes dark and then after a few seconds returns to login screen.

journal gives me:-
Sep 16 09:22:04 HP-Z640-1 sddm-helper[2134]: Starting X11 session: "" "/usr/etc/X11/xdm/Xsession \"/usr/bin/startplasma-x11\""
Sep 16 09:22:04 HP-Z640-1 sddm[1851]: Session started false
Sep 16 09:22:04 HP-Z640-1 sddm-helper[2134]: [PAM] Closing session
Sep 16 09:22:04 HP-Z640-1 sddm-helper[2134]: [PAM] Ended.
Sep 16 09:22:04 HP-Z640-1 sddm[1851]: Auth: sddm-helper exited with 2 

and there is nothing in /etc/sddm.conf.d> or 
/.local/share/sddm> cat xorg-session.log (nothing here)
Comment 2 Alastair Budge-Reid 2023-09-20 20:00:44 UTC 
I was not able to identify why this problem occurred but eventually I did a fresh install of TW and now there is no problem.
Resolved.
Comment 3 Frank Krüger 2023-09-20 20:41:42 UTC 
(In reply to Alastair Budge-Reid from comment #2)
> I was not able to identify why this problem occurred but eventually I did a
> fresh install of TW and now there is no problem.
> Resolved.

That's interesting, since there are several reports on boot failure (cf., e.g., comment 1). What is your kernel version? Thx.
Comment 4 Alastair Budge-Reid 2023-09-21 08:35:07 UTC 
Hi, here is my present system:-
Operating System: openSUSE Tumbleweed 20230917
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10
Kernel Version: 6.5.3-1-default (64-bit)
Graphics Platform: X11
Processors: 24 × Intel® Xeon® CPU E5-2620 v3 @ 2.40GHz
Memory: 62.8 GiB of RAM
Graphics Processor: AMD Radeon Pro WX 7100 Graphics
Manufacturer: Hewlett-Packard
Product Name: HP Z640 Workstation

I had been using TW before the new build but forgive me I didn't keep the previous snapshots.