The assertion was triggered again, fortunately without a crash. I'm adding logs to inspect this path, as it differs from the previous one.
lip 27 23:06:00 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=1920 y=683 width=2560 height=1600 lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 31 with keysym 31 (keycode a). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 36 with keysym 36 (keycode f). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 35 with keysym 35 (keycode e). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 34 with keysym 34 (keycode d). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 33 with keysym 33 (keycode c). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 31 with keysym 31 (keycode a). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 32 with keysym 32 (keycode b). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 35 with keysym 35 (keycode e). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 32 with keysym 32 (keycode b). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 33 with keysym 33 (keycode c). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 34 with keysym 34 (keycode d). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 36 with keysym 36 (keycode f). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11). lip 27 23:06:00 F2A gnome-shell[84990]: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12). lip 27 23:06:00 F2A gnome-shell[84990]: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed lip 27 23:06:03 F2A kernel: usb 1-2.1: USB disconnect, device number 92 lip 27 23:06:03 F2A kernel: usb 1-2.1.1: USB disconnect, device number 93 lip 27 23:06:03 F2A kernel: usb 1-2.1.1.1: USB disconnect, device number 94 lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1920,000000, 683,000000) lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1920,000000, 683,000000) lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:05 F2A gnome-shell[84990]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed lip 27 23:06:05 F2A gnome-shell[84990]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1920,000000, 683,000000) lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:05 F2A xdg-desktop-por[85483]: Monitor 'Dell Inc. 27"' has no configuration which is-current! lip 27 23:06:05 F2A xdg-desktop-por[85483]: Monitor 'Dell Inc. 27"' has no configuration which is-current! lip 27 23:06:05 F2A gnome-shell[84990]: meta_display_get_monitor_in_fullscreen: assertion 'monitor >= 0 && monitor < n_logical_monitors' failed lip 27 23:06:05 F2A gnome-shell[84990]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed lip 27 23:06:05 F2A gnome-shell[84990]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1920,000000, 683,000000) lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1920,000000, 683,000000) lip 27 23:06:05 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:05 F2A gnome-shell[84990]: ASSERTION WORKAROUND: NO LOGICAL MONITORS AT ALL lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 31 with keysym 31 (keycode a). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 36 with keysym 36 (keycode f). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 31 with keysym 31 (keycode a). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 33 with keysym 33 (keycode c). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 34 with keysym 34 (keycode d). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 32 with keysym 32 (keycode b). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 32 with keysym 32 (keycode b). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 35 with keysym 35 (keycode e). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 33 with keysym 33 (keycode c). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 36 with keysym 36 (keycode f). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 35 with keysym 35 (keycode e). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 34 with keysym 34 (keycode d). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10). lip 27 23:06:05 F2A gnome-shell[84990]: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11). lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1920,000000, 683,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1919,000000, 683,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1880,000000, 693,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1880,000000, 693,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1842,000000, 705,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1806,000000, 715,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1754,000000, 731,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1692,000000, 749,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1638,000000, 765,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1570,000000, 785,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Checking logical monitors for point (1498,000000, 805,000000) lip 27 23:06:09 F2A gnome-shell[84990]: [MUTTER DEBUG] Monitor: x=0 y=0 width=1920 height=1080 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2117277 Title: gnome-shell crash on unplugging external monitor – meta_window_get_work_area_for_logical_monitor assertion Status in mutter package in Ubuntu: New Bug description: While unplugging an external monitor (HDMI), GNOME Shell crashed immediately. The session was terminated and returned to the login screen. I am running Ubuntu 25.04 with GNOME Shell 48.0 and Mutter 48.1 under Wayland. This issue seems related to monitor hotplug or logical monitor handling. In my case, the crash most frequently occurs while a YouTube video is playing in Google Chrome. However, it is very rare overall and difficult to reproduce consistently. Unplugging the monitor during video playback seems to trigger the bug more reliably. similar issue: https://gitlab.gnome.org/GNOME/mutter/-/issues/3402 lip 18 16:11:26 F2A gnome-shell[3582]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed lip 18 16:11:26 F2A gnome-shell[3582]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed lip 18 16:11:26 F2A gnome-shell[3582]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed lip 18 16:11:26 F2A gnome-shell[3582]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed lip 18 16:11:26 F2A gnome-shell[3582]: meta_display_get_monitor_in_fullscreen: assertion 'monitor >= 0 && monitor < n_logical_monitors' failed lip 18 16:11:26 F2A gnome-shell[3582]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed lip 18 16:11:26 F2A gnome-shell[3582]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed lip 18 16:11:26 F2A gnome-shell[3582]: ** lip 18 16:11:26 F2A gnome-shell[3582]: libmutter:ERROR:../src/core/window.c:5986:meta_window_get_work_area_for_logical_monitor: assertion failed: (logical_monitor) lip 18 16:11:26 F2A gnome-shell[3582]: Bail out! libmutter:ERROR:../src/core/window.c:5986:meta_window_get_work_area_for_logical_monitor: assertion failed: (logical_monitor) lip 18 16:11:26 F2A gnome-shell[3582]: GNOME Shell crashed with signal 6 lip 18 16:11:26 F2A gnome-shell[3582]: == Stack trace for context 0x65310685c930 == lip 18 16:11:26 F2A gnome-shell[3582]: #0 6531069518f8 i resource:///org/gnome/shell/ui/init.js:21 (65af8270c90 @ 48) lip 18 16:11:26 F2A systemd-coredump[2170777]: Process 3582 (gnome-shell) of user 1000 terminated abnormally with signal 6/ABRT, processing... lip 18 16:11:26 F2A systemd[1]: Started systemd-coredump@19-2170777-0.service - Process Core Dump (PID 2170777/UID 0). lip 18 16:11:27 F2A systemd-coredump[2170778]: Process 3582 (gnome-shell) of user 1000 dumped core. ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: gnome-shell 48.0-1ubuntu1 ProcVersionSignature: Ubuntu 6.14.0-23.23-generic 6.14.5 Uname: Linux 6.14.0-23-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.3 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jul 18 18:41:11 2025 DisplayManager: gdm3 InstallationDate: Installed on 2025-07-01 (17 days ago) InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3) ProcEnviron: LANG=pl_PL.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> RebootRequiredPkgs: Error: path contained symlinks. RelatedPackageVersions: mutter-common 48.1-1ubuntu3.1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2117277/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
