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Bug#993495: marked as done (upgrade-reports: autologin to kde via sddm fails after buster->bullseye)

Your message dated Sun, 03 Aug 2025 23:59:32 +0200
with message-id <[🔎] 4674108.LvFx2qVVIh@grummly>
and subject line Cannot reproduce -> closing
has caused the Debian Bug report #993495,
regarding upgrade-reports: autologin to kde via sddm fails after buster->bullseye
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
993495: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993495
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: upgrade-reports
Severity: normal
X-Debbugs-Cc: boris+debian@bretonium.net

My previous release is: buster
I am upgrading to: bullseye
Archive date: before Thu Sep  2 02:22:57 UTC 2021
Upgrade date: Thu Sep 1 ~22:00 UTC+1 2021
uname -a before upgrade: missing
uname -a after upgrade: Linux stationary-pc 5.10.0-8-amd64 #1 SMP Debian 5.10.46-4 (2021-08-03) x86_64 GNU/Linux
Method: apt full-upgrade via internet

Contents of /etc/apt/sources.list: only default `main` repos, no
non-Debian packages, all packages upgraded successfully.

I use sddm as my desktop manager and launch kde plasma with it. I also
use autologin into my single non-root user, that was created during
installation of buster.

After the upgrade autologin failed and sddm and/or plasma crashed. There was
either a black screen or only a cursor on a black background. Logs are
in the end of the report.

The problem was in autologin and in the contents of /etc/sddm.conf. The
contents was probably something like this (it got rewritten after
reconfiguration via gui and original content lost):

[Autologin]
User=breton
Session=plasma

After i commented out these lines, i was able to log again. After
re-configuring autologin via kde gui things were still working.

I will try to reproduce it again in a VM.

Logs:

Sep 02 01:33:25 stationary-pc systemd[1]: Started Simple Desktop Display Manager.
Sep 02 01:33:25 stationary-pc sddm[885]: Initializing...
Sep 02 01:33:25 stationary-pc sddm[885]: Starting...
Sep 02 01:33:25 stationary-pc sddm[885]: Logind interface found
Sep 02 01:33:25 stationary-pc sddm[885]: Adding new display on vt 7 ...
Sep 02 01:33:25 stationary-pc sddm[885]: Loading theme configuration from ""
Sep 02 01:33:25 stationary-pc sddm[885]: Display server starting...
Sep 02 01:33:25 stationary-pc sddm[885]: Adding cookie to "/var/run/sddm/{18e1b067-6f34-44ab-b601-234f264b7fe2}"
Sep 02 01:33:25 stationary-pc sddm[885]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{18e1b067-6f34-44ab-b601-234f264b7fe2} -background none -noreset -displ>
Sep 02 01:33:26 stationary-pc sddm[885]: Setting default cursor
Sep 02 01:33:26 stationary-pc sddm[885]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Sep 02 01:33:26 stationary-pc sddm[885]: Display server started.
Sep 02 01:33:26 stationary-pc sddm[885]: Reading from "/usr/share/xsessions/plasma.desktop"
Sep 02 01:33:26 stationary-pc sddm[885]: Reading from "/usr/share/xsessions/plasma.desktop"
Sep 02 01:33:26 stationary-pc sddm[885]: Session "/usr/share/xsessions/plasma.desktop" selected, command: "/usr/bin/startplasma-x11"
Sep 02 01:33:26 stationary-pc sddm-helper[920]: [PAM] Starting...
Sep 02 01:33:26 stationary-pc sddm-helper[920]: [PAM] Authenticating...
Sep 02 01:33:26 stationary-pc sddm-helper[920]: [PAM] returning.
Sep 02 01:33:26 stationary-pc sddm[885]: Authenticated successfully
Sep 02 01:33:26 stationary-pc sddm-helper[920]: pam_unix(sddm-autologin:session): session opened for user breton(uid=1000) by (uid=0)
Sep 02 01:33:26 stationary-pc sddm-helper[920]: Starting: "/etc/sddm/wayland-session /usr/bin/startplasma-x11"
Sep 02 01:33:26 stationary-pc sddm[885]: Session started
Sep 02 01:33:27 stationary-pc sddm-helper[920]: [PAM] Closing session
Sep 02 01:33:27 stationary-pc sddm-helper[920]: pam_unix(sddm-autologin:session): session closed for user breton
Sep 02 01:33:27 stationary-pc sddm-helper[920]: [PAM] Ended.
Sep 02 01:33:27 stationary-pc sddm[885]: Auth: sddm-helper exited with 1

--- End Message ---
--- Begin Message --- 
Closing since I cannot reproduce the issue in bookworm or trixie, and this bug report hasn’t seen any recent activity.

Feel free to reopen with more recent information on how to reproduce if you still experience this issue.


--
Aurélien

--- End Message ---
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