Not dogtail automation — ordinary desktop apps on noble Adding real-world data from a desktop machine (Zorin OS 18.1, Ubuntu 24.04 base, X11, kernel 7.0.0-38-generic, gnome-shell 46.0+zorin, at- spi2-core 2.52.0-1build1). We have lost the whole session 4 times since 2026-10-01 — each time the "Something went wrong / session failed" screen, requiring a new login (no reboot; kernel uptime continued across the crash).
Trigger is not heavy UI automation. The chain is any AT-SPI client on the bus, in this case LibreOffice Calc and a voice-dictation helper. Most recent occurrence, 2026-10-08 (second-accurate, from journald): - `10:10:15` — LibreOffice Calc (`soffice.bin`, apparmor profile `libreoffice-soffice`) creates its AT-SPI socket `/run/user/1000/at-spi2-00A5W3/socket` - `10:10:43` — `typeless-atspi-[45189]: segfault at 20 ip 00007424087ef8b9 … in libatspi.so.0.0.1[168b9]` - `10:10:43` — `gnome-shell[4639]: segfault at 12000000000 ip 00007761ebf80d61 … in libgobject-2.0.so.0.8000.0[3cd61]` - `10:10:44` — `[email protected]: Main process exited, code=dumped, status=11/SEGV` → `gnome-session-failed.service` → session lost Same signature on the previous occurrences (2026-10-03, 2026-10-05, 2026-10-07): the a11y helper segfaults in libatspi, and gnome-shell follows within ~1 s in libgobject — the client crash takes the shell down because gnome-shell's own atk-bridge is in the dispatch path, exactly like the dogtail report. Status check for noble: `at-spi2-core 2.52.0-1build1` is both the installed and the candidate version (no update offered, nothing in noble-updates/proposed). The fix is released only for questing/resolute/stonking. Request: please backport the fix (2.55.2, commit `d442ee182ec8fa095c6bc5298a17663cfc70cf9a`) to noble-updates. With `toolkit-accessibility=false` the shell leaves the bus and stops taking the hit, but that is a workaround, not a fix — and it is not an option for users who rely on a screen reader. Happy to attach journal excerpts, kernel logs and screen recordings of the crash moment if useful. --- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2158636 Title: gnome-shell crashes with SIGSEGV in libatk-bridge/libatspi during heavy dogtail (AT-SPI) UI automation on both X11 and Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/at-spi/+bug/2158636/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
