Your message dated Mon, 12 Oct 2026 22:50:17 -0400
with message-id <[email protected]>
and subject line Re: Sddm: Autologin no longer works after upgrade from 10
buster to 11 bullseye
has caused the Debian Bug report #1001270,
regarding Sddm: Autologin no longer works after upgrade from 10 buster to 11
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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--
1001270: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001270
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: sddm
Version: 0.19.0-3
I recently upgraded my system to bullseye and sddm autologin no longer
works.
The screen gets stuck black with the a cursor blinking, but nothing more
happens.
I cannot switch to the console via ctrl+alt+F1.
However login in via ssh from another machine works perfectly.
The file /etc/pam.d/sddm-autologin is not modified and identical to the
upstream (debian) version.
In journalctl i find the following sddm entries (please ignore the
QIODevice::write entry - state.conf is by purpose not writeable and never
caused any problems).
Dez 07 10:37:07 WWWWW sddm[1006]: Initializing...
Dez 07 10:37:07 WWWWW sddm[1006]: Starting...
Dez 07 10:37:07 WWWWW sddm[1006]: Logind interface found
Dez 07 10:37:07 WWWWW sddm[1006]: Adding new display on vt 7 ...
Dez 07 10:37:07 WWWWW sddm[1006]: Loading theme configuration from ""
Dez 07 10:37:07 WWWWW sddm[1006]: Display server starting...
Dez 07 10:37:07 WWWWW sddm[1006]: Adding cookie to "/var/run/sddm/{ZZZZ}"
Dez 07 10:37:07 WWWWW sddm[1006]: Running: /usr/bin/X -nolisten tcp -auth
/var/run/sddm/{ZZZZ} -background none -noreset -displayfd 17 -seat seat0 vt7
Dez 07 10:37:08 WWWWW sddm[1006]: Setting default cursor
Dez 07 10:37:08 WWWWW sddm[1006]: Running display setup script
"/usr/share/sddm/scripts/Xsetup"
Dez 07 10:37:08 WWWWW sddm[1006]: Display server started.
Dez 07 10:37:08 WWWWW sddm[1006]: Reading from
"/usr/share/xsessions/plasma.desktop"
Dez 07 10:37:08 WWWWW sddm[1006]: Reading from
"/usr/share/xsessions/plasma.desktop"
Dez 07 10:37:08 WWWWW sddm[1006]: Session
"/usr/share/xsessions/plasma.desktop" selected, command:
"/usr/bin/startplasma-x11"
Dez 07 10:37:08 WWWWW sddm-helper[1085]: [PAM] Starting...
Dez 07 10:37:08 WWWWW sddm-helper[1085]: [PAM] Authenticating...
Dez 07 10:37:08 WWWWW sddm-helper[1085]: [PAM] returning.
Dez 07 10:37:08 WWWWW sddm[1006]: Authenticated successfully
Dez 07 10:37:08 WWWWW sddm[1006]: QIODevice::write (QFile,
"/var/lib/sddm/state.conf"): device not open
Dez 07 10:37:08 WWWWW sddm-helper[1085]: pam_unix(sddm-autologin:session):
session opened for user YYYY(uid=XXXX) by (uid=0)
Dez 07 10:37:08 WWWWW sddm-helper[1085]: Starting:
"/etc/sddm/wayland-session /usr/bin/startplasma-x11"
Dez 07 10:37:08 WWWWW sddm-helper[1109]: Jumping to VT 1
Dez 07 10:37:08 WWWWW sddm-helper[1109]: VT mode didn't need to be fixed
Dez 07 10:37:09 WWWWW sddm[1006]: Session started
Dez 07 10:37:09 WWWWW sddm-helper[1085]: [PAM] Closing session
Dez 07 10:37:09 WWWWW sddm-helper[1085]: pam_unix(sddm-autologin:session):
session closed for user YYYY
Dez 07 10:37:09 WWWWW sddm-helper[1085]: [PAM] Ended.
Dez 07 10:37:09 WWWWW sddm[1006]: Auth: sddm-helper exited with 1
Since the problem is reproducible and the machine does not crash, I can
assist with more logs, etc.
Thanks for your support in advance,
Ralf
--- End Message ---
--- Begin Message ---
Version: 0.20.0-1
On Tue, 7 Dec 2021 11:48:41 +0100 Ralf E-Mail <[email protected]> wrote:
Package: sddm
Version: 0.19.0-3
I recently upgraded my system to bullseye and sddm autologin no longer
works.
The screen gets stuck black with the a cursor blinking, but nothing more
happens.
I cannot switch to the console via ctrl+alt+F1.
However login in via ssh from another machine works perfectly.
The file /etc/pam.d/sddm-autologin is not modified and identical to the
upstream (debian) version.
In journalctl i find the following sddm entries (please ignore the
QIODevice::write entry - state.conf is by purpose not writeable and never
caused any problems).
Dez 07 10:37:07 WWWWW sddm[1006]: Initializing...
Dez 07 10:37:07 WWWWW sddm[1006]: Starting...
Dez 07 10:37:07 WWWWW sddm[1006]: Logind interface found
Dez 07 10:37:07 WWWWW sddm[1006]: Adding new display on vt 7 ...
Dez 07 10:37:07 WWWWW sddm[1006]: Loading theme configuration from ""
Dez 07 10:37:07 WWWWW sddm[1006]: Display server starting...
Dez 07 10:37:07 WWWWW sddm[1006]: Adding cookie to "/var/run/sddm/{ZZZZ}"
Dez 07 10:37:07 WWWWW sddm[1006]: Running: /usr/bin/X -nolisten tcp -auth
/var/run/sddm/{ZZZZ} -background none -noreset -displayfd 17 -seat seat0 vt7
Dez 07 10:37:08 WWWWW sddm[1006]: Setting default cursor
Dez 07 10:37:08 WWWWW sddm[1006]: Running display setup script
"/usr/share/sddm/scripts/Xsetup"
Dez 07 10:37:08 WWWWW sddm[1006]: Display server started.
Dez 07 10:37:08 WWWWW sddm[1006]: Reading from
"/usr/share/xsessions/plasma.desktop"
Dez 07 10:37:08 WWWWW sddm[1006]: Reading from
"/usr/share/xsessions/plasma.desktop"
Dez 07 10:37:08 WWWWW sddm[1006]: Session
"/usr/share/xsessions/plasma.desktop" selected, command:
"/usr/bin/startplasma-x11"
Dez 07 10:37:08 WWWWW sddm-helper[1085]: [PAM] Starting...
Dez 07 10:37:08 WWWWW sddm-helper[1085]: [PAM] Authenticating...
Dez 07 10:37:08 WWWWW sddm-helper[1085]: [PAM] returning.
Dez 07 10:37:08 WWWWW sddm[1006]: Authenticated successfully
Dez 07 10:37:08 WWWWW sddm[1006]: QIODevice::write (QFile,
"/var/lib/sddm/state.conf"): device not open
Dez 07 10:37:08 WWWWW sddm-helper[1085]: pam_unix(sddm-autologin:session):
session opened for user YYYY(uid=XXXX) by (uid=0)
Dez 07 10:37:08 WWWWW sddm-helper[1085]: Starting:
"/etc/sddm/wayland-session /usr/bin/startplasma-x11"
Dez 07 10:37:08 WWWWW sddm-helper[1109]: Jumping to VT 1
Dez 07 10:37:08 WWWWW sddm-helper[1109]: VT mode didn't need to be fixed
Dez 07 10:37:09 WWWWW sddm[1006]: Session started
Dez 07 10:37:09 WWWWW sddm-helper[1085]: [PAM] Closing session
Dez 07 10:37:09 WWWWW sddm-helper[1085]: pam_unix(sddm-autologin:session):
session closed for user YYYY
Dez 07 10:37:09 WWWWW sddm-helper[1085]: [PAM] Ended.
Dez 07 10:37:09 WWWWW sddm[1006]: Auth: sddm-helper exited with 1
Since the problem is reproducible and the machine does not crash, I can
assist with more logs, etc.
Thanks for your support in advance,
The log selects /usr/share/xsessions/plasma.desktop and startplasma-x11,
but then starts it through /etc/sddm/wayland-session. This matches the
autologin session-type detection bug fixed by upstream commit
e81dfcd6913c4fbd1801597168291b1e396633d8.
When the stored session name is an absolute path, the fix checks that its
parent directory matches the session directory being searched. This
prevents an X11 desktop file from being accepted as a Wayland session
merely because that absolute file exists.
The fix is included in upstream 0.20.0 and Debian 0.20.0-1,
and the current source retains the check. Closing with that historical
fixed version for the session misclassification shown in this report.
Regards,
Boyuan Yang
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--- End Message ---
