[Bug 2372839] New: cinnamon-screensaver segfault with uim-1.9.6.

https://bugzilla.redhat.com/show_bug.cgi?id=2372839

Bug ID: 2372839
           Summary: cinnamon-screensaver segfault with uim-1.9.6.
           Product: Fedora
           Version: 42
                OS: Linux
            Status: NEW
         Component: uim
          Keywords: Desktop, Upgrades
          Severity: medium
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail]
  Target Milestone: ---
    Classification: Fedora

Cinnamon-screensaver does not work after updating to uim-1.9.6.
The following logs are output to journal:
```
systemd[2183]: Started dbus-:[e-mail].
cinnamon-screensaver[5935]: CsNotificationWatcher: Could not add match rule to
bus - GDBus.Error:org.freedesktop.DBus.Error.MatchRuleInvalid: Invalid match
rule
cinnamon-screensaver[5935]: Loading AccountsService
cinnamon-screensaver[5935]: Fractional scaling active: False
cinnamon-screensaver[5935]: Trying to connect to logind...
cinnamon-screensaver[5935]: Starting screensaver...
cinnamon-screensaver[5935]: Cinnamon Screensaver support not found in current
theme - adding some...
audit[5935]: ANOM_ABEND auid=1001 uid=1001 gid=1001 ses=3 pid=5935
comm="cinnamon-screen" exe="/usr/bin/python3.13" sig=11 res=1
kernel: cinnamon-screen[5935]: segfault at a6e ip 00007f27627571dd sp
00007ffdedc4a278 error 4 in libc.so.6[1491dd,7f276260e000+16f000] likely on CPU
5 (core 2, socket 0)
kernel: Code: 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 89 f8 48 89 fa
c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 33 01 00 00 <c5> fd 74 0f c5 fd
d7 c1 85 c0 74 57 f3 0f bc c0 c5 f8 77 c3 66 66
kernel: audit: type=1701 audit(1749905665.970:333): auid=1001 uid=1001 gid=1001
ses=3 pid=5935 comm="cinnamon-screen" exe="/usr/bin/python3.13" sig=11 res=1
    (snip)
```

Reproducible: Always

Steps to Reproduce:
1. Log in to cinnamon session.
  (The following versions)
    uim-1.9.6-1.fc42.x86_64
    uim-anthy-1.9.6-1.fc42.x86_64
    uim-gtk3-1.9.6-1.fc42.x86_64
    cinnamon-6.4.9-1.fc42.x86_64
    cinnamon-screensaver-6.4.0-2.fc42.x86_64

2. Press Alt-Ctl-L.

Actual Results:
The screensaver does not work.

Expected Results:
The screensaver works.

Additional Information:
Cinnamon-screensaver works when downgrades to uim-1.8.9.

[Bug 2372839] cinnamon-screensaver segfault with uim-1.9.6.

https://bugzilla.redhat.com/show_bug.cgi?id=2372839

--- Comment #1 from Taichi Yanagiya  ---
Created attachment 2093978
  --> https://bugzilla.redhat.com/attachment.cgi?id=2093978&action=edit
full journal logs.

[Bug 2372839] cinnamon-screensaver segfault with uim-1.9.6.

https://bugzilla.redhat.com/show_bug.cgi?id=2372839

Taichi Yanagiya  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Comment|0                           |updated

--- Comment #0 has been edited ---

Cinnamon-screensaver does not work after updating to uim-1.9.6.
The following logs are output to journal:
--------
systemd[2183]: Started dbus-:[e-mail].
cinnamon-screensaver[5935]: CsNotificationWatcher: Could not add match rule to
bus - GDBus.Error:org.freedesktop.DBus.Error.MatchRuleInvalid: Invalid match
rule
cinnamon-screensaver[5935]: Loading AccountsService
cinnamon-screensaver[5935]: Fractional scaling active: False
cinnamon-screensaver[5935]: Trying to connect to logind...
cinnamon-screensaver[5935]: Starting screensaver...
cinnamon-screensaver[5935]: Cinnamon Screensaver support not found in current
theme - adding some...
audit[5935]: ANOM_ABEND auid=1001 uid=1001 gid=1001 ses=3 pid=5935
comm="cinnamon-screen" exe="/usr/bin/python3.13" sig=11 res=1
kernel: cinnamon-screen[5935]: segfault at a6e ip 00007f27627571dd sp
00007ffdedc4a278 error 4 in libc.so.6[1491dd,7f276260e000+16f000] likely on CPU
5 (core 2, socket 0)
kernel: Code: 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 89 f8 48 89 fa
c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 33 01 00 00 <c5> fd 74 0f c5 fd
d7 c1 85 c0 74 57 f3 0f bc c0 c5 f8 77 c3 66 66
kernel: audit: type=1701 audit(1749905665.970:333): auid=1001 uid=1001 gid=1001
ses=3 pid=5935 comm="cinnamon-screen" exe="/usr/bin/python3.13" sig=11 res=1
    (snip)
--------

Reproducible: Always

Steps to Reproduce:
1. Log in to cinnamon session.
  (The following versions)
    uim-1.9.6-1.fc42.x86_64
    uim-anthy-1.9.6-1.fc42.x86_64
    uim-gtk3-1.9.6-1.fc42.x86_64
    cinnamon-6.4.9-1.fc42.x86_64
    cinnamon-screensaver-6.4.0-2.fc42.x86_64

2. Make sure you have selected uim as the input method.
  $ imsettings-info
  Xinput file: /etc/X11/xinit/xinput.d/uim.conf
  GTK+ immodule: uim
  Qt immodule: xim
  XMODIFIERS: @im=uim
  XIM server: /usr/bin/uim-xim
  Preferences: /usr/bin/uim-pref-gtk3
  Auxiliary: /usr/bin/uim-toolbar-gtk3-systray
  Short Description: UIM
  Long Description:
  Icon file: /usr/share/uim/pixmaps/uim-icon.png
  Is system default: FALSE
  Is user default: TRUE
  Is XIM server: FALSE

3. Press Alt-Ctl-L. (or /usr/bin/cinnamon-screensaver-command --lock)

Actual Results:
The screensaver does not work.

Expected Results:
The screensaver works.

Additional Information:
Cinnamon-screensaver works when downgrades to uim-1.8.9.

[Workarrounds]
Set environment variables so that cinnamon-screensaver uses input methods other
than uim.

# diff -u /usr/bin/cinnamon-screensaver.orig /usr/bin/cinnamon-screensaver
--- /usr/bin/cinnamon-screensaver.orig  2025-01-16 09:00:00.000000000 +0900
+++ /usr/bin/cinnamon-screensaver       2025-06-15 11:50:16.904924151 +0900
@@ -7,5 +7,7 @@

export GI_TYPELIB_PATH="/usr/libexec/cinnamon-screensaver/girepository-1.0"
 export LD_LIBRARY_PATH="/usr/libexec/cinnamon-screensaver"
+export GTK_IM_MODULE=gtk-im-context-simple
+export QT_IM_MODULE=xim

exec /usr/share/cinnamon-screensaver/cinnamon-screensaver-main.py "$@"

[Bug 2372839] cinnamon-screensaver segfault with uim-1.9.6.

https://bugzilla.redhat.com/show_bug.cgi?id=2372839

--- Comment #2 from Fedora Release Engineering  ---
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on
2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
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a
'version' of '42'.

Package Maintainer: If you wish for this bug to remain open because you
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Click the "Show advanced fields" button if you do not see it.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora Linux 42 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.

[Bug 2372839] cinnamon-screensaver segfault with uim-1.9.6.

https://bugzilla.redhat.com/show_bug.cgi?id=2372839

Aoife Moloney  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |EOL
             Status|NEW                         |CLOSED
        Last Closed|                            |2026-06-08 17:31:07

--- Comment #3 from Aoife Moloney  ---
Fedora Linux 42 entered end-of-life (EOL) status on 2026-05-27.

Fedora Linux 42 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

If you can reproduce this bug against a currently maintained version of Fedora
Linux
please feel free to reopen this bug against that version. Note that the version
field may be hidden. Click the "Show advanced fields" button if you do not see
the version field.

If you are unable to reopen this bug, please file a new report against an
active release.

Thank you for reporting this bug and we are sorry it could not be fixed.