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elementary
Segfault when first application opened after login is firefox
What Happened?
When logging and starting firefox before starting any other application gala crashes. Dmesg shows:
[ 39.178155] gala[2158]: segfault at 56523481c419 ip 0000761664af7c48 sp 00007fffcc1591e0 error 4 in libmutter-14.so.0.0.0[f7c48,761664a50000+166000] likely on CPU 0 (core 0, socket 0)
[ 39.178175] Code: 0e 00 e9 5c fe ff ff e8 86 5f f6 ff 66 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 56 49 89 d6 41 55 41 54 41 89 f4 53 48 89 fb <48> 8b 7f 18 e8 8f 9e fc ff 48 89 c7 e8 97 43 fd ff 48 89 c7 e8 6f
Gala version is:
$ apt list gala
Listing... Done
gala/noble,now 8.1.0+r2551+pkg105~ubuntu8.1 amd64 [installed,automatic]
Steps to Reproduce
Install Firefox from Flathub and pin it to the dock. (Haven't tried starting firefox in another way or tried other versions of Firefox.)
- Start system
- Log in
- Click firefox icon in the dock
- Gala crashes
I can reliably reproduce this issue. Starting Firefox after starting any other application has not caused a crash, so far.
Expected Behavior
Gala should not crash.
OS Version
8.x (Circe)
Session Type
Classic Session (X11, This is the default)
Software Version
Latest release (I have run all updates)
Log Output
$ coredumpctl debug gala
PID: 3492 (gala)
UID: 1000 (jonathanmoerman)
GID: 1000 (jonathanmoerman)
Signal: 6 (ABRT)
Timestamp: Sat 2025-03-15 10:52:40 CET (17min ago)
Command Line: /usr/bin/gala
Executable: /usr/bin/gala
Control Group: /user.slice/user-1000.slice/[email protected]/session.slice/[email protected]
Unit: [email protected]
User Unit: [email protected]
Slice: user-1000.slice
Owner UID: 1000 (jonathanmoerman)
Boot ID: c03fe7f51be642daac89889d31b0a249
Machine ID: 65b7843d3062457c3f3c1c6c67cd4b5c
Hostname: elementary-os-desktop-jonathan
Storage: /var/lib/systemd/coredump/core.gala.1000.c03fe7f51be642daac89889d31b0a249.3492.1742032360000000.zst (present)
Size on Disk: 8.4M
Message: Process 3492 (gala) of user 1000 dumped core.
Module libgcc_s.so.1 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64
Module libstdc++.so.6 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64
Module libzstd.so.1 from deb libzstd-1.5.5+dfsg2-2build1.1.amd64
Module libudev.so.1 from deb systemd-255.4-1ubuntu8.5.amd64
Module libsystemd.so.0 from deb systemd-255.4-1ubuntu8.5.amd64
Stack trace of thread 3492:
#0 0x00007fae4b49eb2c pthread_kill (libc.so.6 + 0x9eb2c)
#1 0x00007fae4b44527e raise (libc.so.6 + 0x4527e)
#2 0x00007fae4b4288ff abort (libc.so.6 + 0x288ff)
#3 0x00007fae4c5cef5b n/a (libglib-2.0.so.0 + 0x1ff5b)
#4 0x00007fae4c637a97 g_assertion_message_expr (libglib-2.0.so.0 + 0x88a97)
#5 0x00007fae4bcf9c40 n/a (libmutter-14.so.0 + 0xf9c40)
#6 0x00007fae4c5706c4 g_object_run_dispose (libgobject-2.0.so.0 + 0x246c4)
#7 0x00007fae4bcd9a53 n/a (libmutter-14.so.0 + 0xd9a53)
#8 0x00007fae4c5703fe g_object_unref (libgobject-2.0.so.0 + 0x243fe)
#9 0x000065387344c874 n/a (gala + 0x37874)
#10 0x0000653873455a97 n/a (gala + 0x40a97)
#11 0x00007fae4b42a1ca n/a (libc.so.6 + 0x2a1ca)
#12 0x00007fae4b42a28b __libc_start_main (libc.so.6 + 0x2a28b)
#13 0x0000653873440a25 _start (gala + 0x2ba25)
Stack trace of thread 3513:
#0 0x00007fae4b51b4cd __poll (libc.so.6 + 0x11b4cd)
#1 0x00007fae4c66b66e n/a (libglib-2.0.so.0 + 0xbc66e)
#2 0x00007fae4c60ba53 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca53)
#3 0x00007fae4c60baa9 n/a (libglib-2.0.so.0 + 0x5caa9)
#4 0x00007fae4c63ac82 n/a (libglib-2.0.so.0 + 0x8bc82)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3515:
#0 0x00007fae4b51b4cd __poll (libc.so.6 + 0x11b4cd)
#1 0x00007fae4c66b66e n/a (libglib-2.0.so.0 + 0xbc66e)
#2 0x00007fae4c60cf77 g_main_loop_run (libglib-2.0.so.0 + 0x5df77)
#3 0x00007fae4c494422 n/a (libgio-2.0.so.0 + 0x11a422)
#4 0x00007fae4c63ac82 n/a (libglib-2.0.so.0 + 0x8bc82)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3514:
#0 0x00007fae4b52725d syscall (libc.so.6 + 0x12725d)
#1 0x00007fae4c665d00 g_cond_wait_until (libglib-2.0.so.0 + 0xb6d00)
#2 0x00007fae4c5d64f3 n/a (libglib-2.0.so.0 + 0x274f3)
#3 0x00007fae4c5d6646 g_async_queue_timeout_pop (libglib-2.0.so.0 + 0x27646)
#4 0x00007fae4c6403df n/a (libglib-2.0.so.0 + 0x913df)
#5 0x00007fae4c63ac82 n/a (libglib-2.0.so.0 + 0x8bc82)
#6 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#7 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3518:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3512:
#0 0x00007fae4b52725d syscall (libc.so.6 + 0x12725d)
#1 0x00007fae4c66540d g_cond_wait (libglib-2.0.so.0 + 0xb640d)
#2 0x00007fae4c5d652b n/a (libglib-2.0.so.0 + 0x2752b)
#3 0x00007fae4c63e043 n/a (libglib-2.0.so.0 + 0x8f043)
#4 0x00007fae4c63ac82 n/a (libglib-2.0.so.0 + 0x8bc82)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3519:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3520:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3521:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3627:
#0 0x00007fae4b52725d syscall (libc.so.6 + 0x12725d)
#1 0x00007fae4c66540d g_cond_wait (libglib-2.0.so.0 + 0xb640d)
#2 0x00007fae4c5d652b n/a (libglib-2.0.so.0 + 0x2752b)
#3 0x00007fae4c5d658c g_async_queue_pop (libglib-2.0.so.0 + 0x2758c)
#4 0x00007fae4a12d0fb n/a (libpangoft2-1.0.so.0 + 0xc0fb)
#5 0x00007fae4c63ac82 n/a (libglib-2.0.so.0 + 0x8bc82)
#6 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#7 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3516:
#0 0x00007fae4b51b4cd __poll (libc.so.6 + 0x11b4cd)
#1 0x00007fae4c66b66e n/a (libglib-2.0.so.0 + 0xbc66e)
#2 0x00007fae4c60ba53 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca53)
#3 0x00007fae4c782595 n/a (libdconfsettings.so + 0x7595)
#4 0x00007fae4c63ac82 n/a (libglib-2.0.so.0 + 0x8bc82)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3522:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 4621:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3523:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3528:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 4508:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3529:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
Stack trace of thread 3530:
#0 0x00007fae4b498d71 n/a (libc.so.6 + 0x98d71)
#1 0x00007fae4b49b7ed pthread_cond_wait (libc.so.6 + 0x9b7ed)
#2 0x00007fae4755040d n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15040d)
#3 0x00007fae4752ed0b n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x12ed0b)
#4 0x00007fae4755033c n/a (libgallium-24.2.8-1ubuntu1~24.04.1.so + 0x15033c)
#5 0x00007fae4b49caa4 n/a (libc.so.6 + 0x9caa4)
#6 0x00007fae4b529c3c n/a (libc.so.6 + 0x129c3c)
ELF object binary architecture: AMD x86-64
GNU gdb (Ubuntu 15.0.50.20240403-0ubuntu1) 15.0.50.20240403-git
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Reading symbols from /usr/bin/gala...
Reading symbols from /usr/lib/debug/.build-id/cd/20c73953215087b896946c745de5107463b462.debug...
warning: Can't open file /memfd:xshmfence (deleted) during file-backed mapping note processing
warning: Can't open file /home/jonathanmoerman/.config/dconf/user (deleted) during file-backed mapping note processing
warning: Can't open file /run/user/1000/dconf/user (deleted) during file-backed mapping note processing
[New LWP 3492]
[New LWP 3513]
[New LWP 3515]
[New LWP 3514]
[New LWP 3518]
[New LWP 3512]
[New LWP 3519]
[New LWP 3520]
[New LWP 3521]
[New LWP 3627]
[New LWP 3516]
[New LWP 3522]
[New LWP 4621]
[New LWP 3523]
[New LWP 3528]
[New LWP 4508]
[New LWP 3529]
[New LWP 3530]
warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libgdk-3.so.0
warning: could not find '.gnu_debugaltlink' file for /usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so
warning: could not find '.gnu_debugaltlink' file for /usr/lib/x86_64-linux-gnu/gvfs/libgvfscommon.so
warning: could not find '.gnu_debugaltlink' file for /usr/lib/x86_64-linux-gnu/gio/modules/libgioremote-volume-monitor.so
warning: could not find '.gnu_debugaltlink' file for /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
warning: could not find '.gnu_debugaltlink' file for /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-journal.so
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/gala'.
Program terminated with signal SIGABRT, Aborted.
#0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
warning: 44 ./nptl/pthread_kill.c: No such file or directory
[Current thread is 1 (Thread 0x7fae3f5fdb80 (LWP 3492))]
(gdb) bt
#0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
#1 __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
#2 __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
#3 0x00007fae4b44527e in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#4 0x00007fae4b4288ff in __GI_abort () at ./stdlib/abort.c:79
#5 0x00007fae4c5cef5b in g_assertion_message (domain=domain@entry=0x7fae4bdb6014 "libmutter", file=file@entry=0x7fae4bdd2058 "../src/backends/x11/meta-barrier-x11.c", line=line@entry=231,
func=func@entry=0x7fae4bde8a50 <__func__.0.lto_priv.74> "meta_x11_barriers_free", message=message@entry=0x653895a7eca0 "assertion failed: (g_hash_table_size (x11_barriers->barriers) == 0)") at ../../../glib/gtestutils.c:3331
#6 0x00007fae4c637a97 in g_assertion_message_expr (domain=domain@entry=0x7fae4bdb6014 "libmutter", file=file@entry=0x7fae4bdd2058 "../src/backends/x11/meta-barrier-x11.c", line=line@entry=231,
func=func@entry=0x7fae4bde8a50 <__func__.0.lto_priv.74> "meta_x11_barriers_free", expr=expr@entry=0x7fae4bdd2028 "g_hash_table_size (x11_barriers->barriers) == 0") at ../../../glib/gtestutils.c:3357
#7 0x00007fae4bcf9c40 in meta_x11_barriers_free (x11_barriers=<optimized out>) at ../src/backends/x11/meta-barrier-x11.c:231
#8 meta_x11_barriers_free (x11_barriers=0x653895670810) at ../src/backends/x11/meta-barrier-x11.c:229
#9 meta_backend_x11_dispose (object=<optimized out>) at ../src/backends/x11/meta-backend-x11.c:1035
#10 0x00007fae4c5706c4 in g_object_run_dispose (object=0x6538955be760) at ../../../gobject/gobject.c:1839
#11 g_object_run_dispose (object=object@entry=0x6538955be760) at ../../../gobject/gobject.c:1829
#12 0x00007fae4bcd9a53 in meta_backend_destroy (backend=0x6538955be760) at ../src/backends/meta-backend.c:263
#13 meta_context_dispose (object=0x6538955afab0) at ../src/core/meta-context.c:749
#14 0x00007fae4c5703fe in g_object_unref (_object=0x6538955afab0) at ../../../gobject/gobject.c:4381
#15 0x000065387344c874 in block5_data_unref (_userdata_=0x6538955acc50) at src/gala.p/Main.c:113
#16 block5_data_unref (_userdata_=0x6538955acc50) at src/gala.p/Main.c:108
#17 0x0000653873455a97 in gala_main (args=<optimized out>, args_length1=<optimized out>) at src/gala.p/Main.c:345
#18 0x00007fae4b42a1ca in __libc_start_call_main (main=main@entry=0x6538734409f0 <main>, argc=argc@entry=1, argv=argv@entry=0x7ffdfe0dc7c8) at ../sysdeps/nptl/libc_start_call_main.h:58
#19 0x00007fae4b42a28b in __libc_start_main_impl (main=0x6538734409f0 <main>, argc=1, argv=0x7ffdfe0dc7c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdfe0dc7b8) at ../csu/libc-start.c:360
#20 0x0000653873440a25 in _start ()
Hardware Info
CPU: AMD Ryzen 7 1700 Eight-Core Processor GPU: AMD Radeon RX 6600 Memory: 16 GB Screen resolution: 1920x1080
Yes, I haven't tried any other version.
Output from flatpak list:
Name Application ID Version Branch Origin Installation
Firefox org.mozilla.firefox 136.0.1 stable flathub user
Today it didn't crash so it doesn't happen 100% of the time. I got other weird behavior with Firefox: it is always be present in my workspace matter which workspace I switch to. It does dissapear for a bit when switching workspaces.
We've merged and released a lot of crash fixes so I suppose this issue is fixed now. If you still encounter this issue, please reply here and I'll reopen it