Thunderbird dumps after today flatpack fc42sb upgrade

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Deployments:
● fedora:fedora/42/x86_64/silverblue
Version: 42.20251018.0 (2025-10-18T00:30:11Z)

lt@fc42sb:~$ flatpak --version
Flatpak 1.16.1

lt@fc42sb:~$ flatpak run net.thunderbird.Thunderbird --safe-mode
[2] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
[Parent 2, Main Thread] WARNING: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.: ‘glib warning’, file /builddir/build/BUILD/thunderbird-140.3.0-build/thunderbird-140.3.0/toolkit/xre/nsSigHandlers.cpp:201

(net.thunderbird.Thunderbird:2): Gtk-WARNING **: 11:42:53.879: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:../gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/scalable/status/image-missing.svg: Failed to create file “~/.var/app/net.thunderbird.Thunderbird/cache/tmp/gdk-pixbuf-glycin-tmp.W7W0E3”: No such file or directory (g-file-error-quark, 4)
Bail out! Gtk:ERROR:../gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/scalable/status/image-missing.svg: Failed to create file “~/.var/app/net.thunderbird.Thunderbird/cache/tmp/gdk-pixbuf-glycin-tmp.W7W0E3”: No such file or directory (g-file-error-quark, 4)
Redirecting call to abort() to mozalloc_abort

journalctl

ott 18 11:24:26 fc42sb systemd[1832]: Started app-flatpak-net.thunderbird.Thunderbird-3115451885.scope.
ott 18 11:24:26 fc42sb net.thunderbird.Thunderbird.desktop[3810]: [2] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
ott 18 11:24:27 fc42sb systemd[1]: fwupd.service: Deactivated successfully.
ott 18 11:24:27 fc42sb audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=fwupd comm=“systemd” exe=“/usr/lib/systemd/systemd” hostname=? addr=? terminal=? res=success’
ott 18 11:24:27 fc42sb audit: BPF prog-id=94 op=UNLOAD
ott 18 11:24:28 fc42sb systemd[1832]: Started app-flatpak-net.thunderbird.Thunderbird-1011029366.scope.
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird.desktop[3810]: [Parent 2, Main Thread] WARNING: Could not load a pixbuf from icon theme.
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird.desktop[3810]: This may indicate that pixbuf loaders or the mime database could not be found.: ‘glib warning’, file /builddir/build/BUILD/thunderbird-140.3.0-build/thunderbird-140.3.0/toolkit/xre/nsSigHandlers.cpp:201
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird[3810]: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird.desktop[3810]: **
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird.desktop[3810]: Gtk:ERROR:../gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/scalable/status/image-missing.svg: Failed to create file “~/.var/app/net.thunderbird.Thunderbird/cache/tmp/gdk-pixbuf-glycin-tmp.T7GOE3”: No such file or directory (g-file-error-quark, 4)
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird.desktop[3810]: Bail out! Gtk:ERROR:../gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/scalable/status/image-missing.svg: Failed to create file “~/.var/app/net.thunderbird.Thunderbird/cache/tmp/gdk-pixbuf-glycin-tmp.T7GOE3”: No such file or directory (g-file-error-quark, 4)
ott 18 11:24:28 fc42sb net.thunderbird.Thunderbird.desktop[3810]: Redirecting call to abort() to mozalloc_abort
ott 18 11:24:28 fc42sb audit[3810]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=kernel pid=3810 comm=“thunderbird” exe=“/app/lib64/thunderbird/thunderbird” sig=11 res=1
ott 18 11:24:28 fc42sb systemd-coredump[3901]: Process 3810 (thunderbird) of user 1000 terminated abnormally with signal 11/SEGV, processing…
ott 18 11:24:28 fc42sb audit: BPF prog-id=115 op=LOAD
ott 18 11:24:28 fc42sb audit: BPF prog-id=116 op=LOAD
ott 18 11:24:28 fc42sb audit: BPF prog-id=117 op=LOAD
ott 18 11:24:28 fc42sb systemd[1]: Started systemd-coredump@1-3901-0.service - Process Core Dump (PID 3901/UID 0).
ott 18 11:24:28 fc42sb audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg=‘unit=systemd-coredump@1-3901-0 comm=“systemd” exe=“/usr/lib/systemd/systemd” hostname=? addr=? terminal=? res=success’
ott 18 11:24:29 fc42sb systemd-coredump[3902]: [🡕] Process 3810 (thunderbird) of user 1000 dumped core.

                                           Stack trace of thread 2:
                                           #0  0x00007fe1964803cc n/a (/usr/lib64/libc.so.6 + 0x743cc)
                                           #1  0x00007fe19642618e n/a (/usr/lib64/libc.so.6 + 0x1a18e)
                                           #2  0x00007fe18c9222e5 n/a (/app/lib64/thunderbird/libxul.so + 0x4f222e5)
                                           #3  0x0000000000000001 n/a (n/a + 0x0)
                                           ELF object binary architecture: AMD x86-64
2 Likes
3

Rollback,
Downgrade package,
or select previous OS version at start up

4

I seen a report of this happening as well on Fedora Workstation using the fedora Flatpak.

5

Regular user here. For me, this error is triggered when trying to add an email attachment within Thunderbird. I click the “Attach” button, and Thunderbird immediately crashes.

7

Has anyone filed a bug? How to file a bug :: Fedora Docs
Thanks!

1 Like
8

Right, and I think OP is also using the Fedora Flatpak here. (The logs say net.thunderbird.Thunderbird whereas the Flathub one is org.mozilla.Thunderbird)

The Flathub version was last updated on 14th Oct and is running fine for me.

9

Bug report: 2404930 – Thunderbird flatpak aborts on startup after latest updates

4 Likes
10

Sorry dumb question: what is OP?

11

OP stands for Original Poster, so you

12

Same here, with flatpak net.thunderbird.Thunderbird from Fedora. Surely, there’s an easy way to dowgrade/revert to the flatpak version that was installed before the latest update, but I struggle to find how to find the previous version.

flatpak remote-info fedora net.thunderbird.Thunderbird just shows the latest version, so unclear how to follow the flatpak official documentation for downgrades.

1 Like
13

facing the same issue

14

Someone on the bug report mentioned that deleting the TMPDIR environment variable for Thunderbird in Flatseal allows it to start. This has also worked for me, though I haven’t understood what this was intended to do in the first place.

image
image610×183 11.9 KB

9 Likes
15

Thanks for this. I had to install Flatseal, then was able to locate thunderbird, scroll til I found the Environment section and deleted the TMPDIR variable. After that, launched thunderbird as normal. Worked on the flatpak version of thunderbird.

uname -r
6.16.12-200.fc42.x86_64

1 Like