*** This bug is a duplicate of bug 2065081 *** https://bugs.launchpad.net/bugs/2065081
I'm seeing a similar behavior and have no graphic cards on my machine (using the integrated graphics from my AMD CPU). Among other error messages I'm seeing the below: 2024-06-05T09:19:16.960412+02:00 pc gsd-media-keys[73033]: gvc_mixer_card_get_index: assertion 'GVC_IS_MIXER_CARD (card)' failed 2024-06-05T09:19:16.974507+02:00 pc gnome-shell[72857]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed 2024-06-05T09:19:16.974726+02:00 pc gnome-shell[72857]: ** 2024-06-05T09:19:16.974771+02:00 pc gnome-shell[72857]: libmutter:ERROR:../src/core/window.c:5869:meta_window_get_work_area_for_logical_monitor: assertion failed: (logical_monitor) 2024-06-05T09:19:16.974797+02:00 pc gnome-shell[72857]: Bail out! libmutter:ERROR:../src/core/window.c:5869:meta_window_get_work_area_for_logical_monitor: assertion failed: (logical_monitor) 2024-06-05T09:19:16.974814+02:00 pc gnome-shell[72857]: GNOME Shell crashed with signal 6 2024-06-05T09:19:16.974844+02:00 pc gnome-shell[72857]: == Stack trace for context 0x577eefdc4b70 == 2024-06-05T09:19:16.974865+02:00 pc gnome-shell[72857]: #0 7ffcb4fe9a80 b file:///usr/share/gnome-shell/extensions/tiling-assist...@ubuntu.com/src/extension/tilingWindowManager.js:99 (28d7487d3060 @ 78) 2024-06-05T09:19:16.974891+02:00 pc gnome-shell[72857]: #1 7ffcb4fe9b80 b file:///usr/share/gnome-shell/extensions/tiling-assist...@ubuntu.com/src/extension/tilingWindowManager.js:87 (28d7487ccfb0 @ 109) 2024-06-05T09:19:16.974913+02:00 pc gnome-shell[72857]: #2 7ffcb4fe9c90 b self-hosted:241 (67fffb97a60 @ 279) 2024-06-05T09:19:16.974937+02:00 pc gnome-shell[72857]: #3 577eefe87dd0 i file:///usr/share/gnome-shell/extensions/tiling-assist...@ubuntu.com/src/extension/tilingWindowManager.js:78 (28d7487ccf60 @ 183) 2024-06-05T09:19:16.974956+02:00 pc gnome-shell[72857]: #4 7ffcb4fea760 b file:///usr/share/gnome-shell/extensions/tiling-assist...@ubuntu.com/src/extension/tilingWindowManager.js:566 (28d7487d36a0 @ 208) 2024-06-05T09:19:16.974979+02:00 pc gnome-shell[72857]: #5 577eefe87d00 i file:///usr/share/gnome-shell/extensions/tiling-assist...@ubuntu.com/src/extension/moveHandler.js:408 (28d7487c0650 @ 86) 2024-06-05T09:19:16.975004+02:00 pc gnome-shell[72857]: #6 577eefe87b88 i file:///usr/share/gnome-shell/extensions/tiling-assist...@ubuntu.com/src/extension/moveHandler.js:386 (28d7487c05b0 @ 1703) 2024-06-05T09:19:16.975034+02:00 pc gnome-shell[72857]: #7 577eefe87af8 i resource:///org/gnome/shell/ui/init.js:21 (67fffb70bf0 @ 48) 2024-06-05T09:19:17.143795+02:00 pc /usr/libexec/gdm-x-session[72651]: (II) AMDGPU(0): EDID vendor "LEN", prod id 26079 2024-06-05T09:19:17.143871+02:00 pc /usr/libexec/gdm-x-session[72651]: (II) AMDGPU(0): Using hsync ranges from config file 2024-06-05T09:19:17.143891+02:00 pc /usr/libexec/gdm-x-session[72651]: (II) AMDGPU(0): Using vrefresh ranges from config file 2024-06-05T09:19:17.348839+02:00 pc kernel: usb 3-2.2: reset high-speed USB device number 3 using xhci_hcd 2024-06-05T09:19:17.385825+02:00 pc mattermost-desktop_mattermost-desktop.desktop[73821]: [73821:0605/091917.385501:ERROR:browser_main_loop.cc(278)] Gdk: gdk_monitor_get_scale_factor: assertion 'GDK_IS_MONITOR (monitor)' failed 2024-06-05T09:19:17.387346+02:00 pc mattermost-desktop_mattermost-desktop.desktop[73821]: [73821:0605/091917.387284:ERROR:browser_main_loop.cc(278)] Gdk: gdk_monitor_get_scale_factor: assertion 'GDK_IS_MONITOR (monitor)' failed 2024-06-05T09:19:18.094021+02:00 pc /usr/libexec/gdm-x-session[72651]: (WW) AMDGPU(0): get vblank counter failed: Invalid argument 2024-06-05T09:19:18.094096+02:00 pc /usr/libexec/gdm-x-session[72651]: (WW) AMDGPU(0): get vblank counter failed: Invalid argument 2024-06-05T09:19:18.094246+02:00 pc mattermost-desktop_mattermost-desktop.desktop[73944]: [73944:0605/091918.093966:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 1 times! 2024-06-05T09:19:18.095678+02:00 pc /usr/libexec/gdm-x-session[72651]: (WW) AMDGPU(0): get vblank counter failed: Invalid argument 2024-06-05T09:19:18.095887+02:00 pc /usr/libexec/gdm-x-session[72651]: (WW) AMDGPU(0): get vblank counter failed: Invalid argument 2024-06-05T09:19:18.095992+02:00 pc mattermost-desktop_mattermost-desktop.desktop[73944]: [73944:0605/091918.095901:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 2 times! 2024-06-05T09:19:18.098129+02:00 pc /usr/libexec/gdm-x-session[72651]: (WW) AMDGPU(0): get vblank counter failed: Invalid argument 2024-06-05T09:19:18.098196+02:00 pc mattermost-desktop_mattermost-desktop.desktop[73944]: [73944:0605/091918.098124:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 3 times! 2024-06-05T09:19:18.109884+02:00 pc /usr/libexec/gdm-x-session[72651]: (WW) AMDGPU(0): get vblank counter failed: Invalid argument 2024-06-05T09:19:18.146850+02:00 pc kernel: audit: type=1107 audit(1717571958.145:4262): pid=1910 uid=102 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_signal" bus="system" path="/org/freedesktop/login1" interface="org.freedesktop.DBus.Properties" member="PropertiesChanged" name=":1.8" mask="receive" pid=75613 label="snap.firefox.firefox" peer_pid=1903 peer_label="unconfined" 2024-06-05T09:19:18.146870+02:00 pc kernel: exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?' 2024-06-05T09:19:18.143205+02:00 pc /usr/libexec/gdm-x-session[72651]: message repeated 7 times: [ (WW) AMDGPU(0): get vblank counter failed: Invalid argument] 2024-06-05T09:19:18.152613+02:00 pc systemd[72508]: org.gnome.Shell@x11.service: Main process exited, code=dumped, status=6/ABRT -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2065122 Title: Dual monitor setup not working after sleep/logout To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/2065122/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs