This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1974028

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1974028

Title:
  Cheese doesn't start in Wyaland

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  $ WAYLAND_DEBUG=1 cheese 
  [2642509.975]  -> [email protected]_registry(new id wl_registry@2)
  [2642509.993]  -> [email protected](new id wl_callback@3)
  [2642510.089] [email protected]_id(3)
  [2642510.101] [email protected](1, "wl_compositor", 5)
  [2642510.110]  -> [email protected](1, "wl_compositor", 3, new id 
[unknown]@4)
  [2642510.122] [email protected](2, "wl_drm", 2)
  [2642510.131] [email protected](3, "wl_shm", 1)
  [2642510.138]  -> [email protected](3, "wl_shm", 1, new id [unknown]@5)
  [2642510.147] [email protected](5, "wl_output", 2)
  [2642510.154]  -> [email protected](5, "wl_output", 2, new id [unknown]@6)
  [2642510.217]  -> [email protected](new id wl_callback@7)
  [2642510.223] [email protected](6, "zxdg_output_manager_v1", 3)
  [2642510.233]  -> [email protected](6, "zxdg_output_manager_v1", 3, new id 
[unknown]@8)
  [2642510.245]  -> [email protected]_xdg_output(new id 
zxdg_output_v1@9, wl_output@6)
  [2642510.252]  -> [email protected](new id wl_callback@10)
  [2642510.258] [email protected](7, "wl_data_device_manager", 3)
  [2642510.266]  -> [email protected](7, "wl_data_device_manager", 3, new id 
[unknown]@11)
  [2642510.278] [email protected](8, 
"zwp_primary_selection_device_manager_v1", 1)
  [2642510.283]  -> [email protected](8, 
"zwp_primary_selection_device_manager_v1", 1, new id [unknown]@12)
  [2642510.291] [email protected](9, "gtk_primary_selection_device_manager", 
1)
  [2642510.295]  -> [email protected](9, 
"gtk_primary_selection_device_manager", 1, new id [unknown]@13)
  [2642510.300] [email protected](10, "wl_subcompositor", 1)
  [2642510.305]  -> [email protected](10, "wl_subcompositor", 1, new id 
[unknown]@14)
  [2642510.313] [email protected](11, "xdg_wm_base", 4)
  [2642510.320] [email protected](12, "zxdg_shell_v6", 1)
  [2642510.326] [email protected](13, "gtk_shell1", 5)
  [2642510.332]  -> [email protected](13, "gtk_shell1", 4, new id [unknown]@15)
  [2642510.337] [email protected](14, "wp_viewporter", 1)
  [2642510.342] [email protected](15, "zwp_pointer_gestures_v1", 3)
  [2642510.348]  -> [email protected](15, "zwp_pointer_gestures_v1", 1, new id 
[unknown]@16)
  [2642510.354] [email protected](16, "zwp_tablet_manager_v2", 1)
  [2642510.359]  -> [email protected](16, "zwp_tablet_manager_v2", 1, new id 
[unknown]@17)
  [2642510.366] [email protected](17, "wl_seat", 5)
  [2642510.372] [email protected](18, "zwp_relative_pointer_manager_v1", 1)
  [2642510.376] [email protected](19, "zwp_pointer_constraints_v1", 1)
  [2642510.382] [email protected](20, "zxdg_exporter_v1", 1)
  [2642510.388]  -> [email protected](20, "zxdg_exporter_v1", 1, new id 
[unknown]@18)
  [2642510.397] [email protected](21, "zxdg_importer_v1", 1)
  [2642510.402]  -> [email protected](21, "zxdg_importer_v1", 1, new id 
[unknown]@19)
  [2642510.409] [email protected](22, "zwp_linux_dmabuf_v1", 4)
  [2642510.416] [email protected](23, 
"zwp_keyboard_shortcuts_inhibit_manager_v1", 1)
  [2642510.421]  -> [email protected](23, 
"zwp_keyboard_shortcuts_inhibit_manager_v1", 1, new id [unknown]@20)
  [2642510.431] [email protected](24, "zwp_text_input_manager_v3", 1)
  [2642510.438] [email protected](25, "wp_presentation", 1)
  [2642510.444] [email protected](26, "xdg_activation_v1", 1)
  [2642510.449] [email protected](23195)
  [2642510.485]  -> [email protected]_pool(new id wl_shm_pool@3, fd 10, 2304)
  [2642510.623]  -> [email protected](6912)
  [2642510.669]  -> [email protected](16128)
  [2642510.745]  -> [email protected](34560)
  [2642510.909]  -> [email protected](71424)
  [2642511.697]  -> [email protected](145152)
  [2642511.753]  -> [email protected](292608)
  [2642512.954]  -> [email protected](587520)
  [2642514.901]  -> [email protected](1177344)
  [2642517.838]  -> [email protected](2356992)
  [2642526.562]  -> [email protected](17, "wl_seat", 5, new id [unknown]@21)
  [2642528.370]  -> [email protected]_surface(new id wl_surface@22)
  [2642528.384]  -> [email protected]_device(new 
id zwp_primary_selection_device_v1@23, wl_seat@21)
  [2642528.389]  -> [email protected]_data_device(new id 
wl_data_device@24, wl_seat@21)
  [2642528.444]  -> [email protected]_surface(new id wl_surface@25)
  [2642528.447]  -> [email protected]_tablet_seat(new id 
zwp_tablet_seat_v2@26, wl_seat@21)
  [2642528.451]  -> [email protected](new id wl_callback@27)
  [2642528.626] [email protected]_id(7)
  [2642528.631] [email protected]_id(10)
  [2642528.633] [email protected]_id(27)
  [2642528.638] [email protected](0)
  [2642528.641] [email protected](1)
  [2642528.643] [email protected](875708993)
  [2642528.647] [email protected](875709016)
  [2642528.650] [email protected](909199186)
  [2642528.653] [email protected](808669761)
  [2642528.656] [email protected](808669784)
  [2642528.659] [email protected](808665665)
  [2642528.662] [email protected](808665688)
  [2642528.665] [email protected](1211388481)
  [2642528.669] [email protected](1211388504)
  [2642528.672] [email protected](1211384385)
  [2642528.675] [email protected](1211384408)
  [2642528.678] [email protected](0, 0, 310, 170, 0, "BOE", "0x07e9", 0)
  [2642528.692] [email protected](3, 1920, 1080, 60000)
  [2642528.698] [email protected](1)
  [2642528.702] [email protected]()
  [2642528.708] [email protected](23195)
  [2642528.712] [email protected]_position(0, 0)
  [2642528.715] [email protected]_size(1920, 1080)
  [2642528.720] [email protected]("eDP-1")
  [2642528.724] [email protected]("Built-in display")
  [2642528.728] [email protected]()
  [2642528.731] [email protected](23195)
  [2642528.736] [email protected](0)
  [2642528.744] [email protected](7)
  [2642528.748]  -> [email protected]_pointer(new id wl_pointer@10)
  [2642528.756]  -> [email protected]_swipe_gesture(new id 
zwp_pointer_gesture_swipe_v1@7, wl_pointer@10)
  [2642528.761]  -> [email protected]_pinch_gesture(new id 
zwp_pointer_gesture_pinch_v1@28, wl_pointer@10)
  [2642528.766]  -> [email protected]_keyboard(new id wl_keyboard@29)
  [2642528.774]  -> [email protected]_touch(new id wl_touch@30)
  [2642528.785] [email protected]("seat0")
  [2642528.788] [email protected](23195)
  [2642528.791]  -> [email protected](11, "xdg_wm_base", 1, new id 
[unknown]@27)
  [2642555.259]  -> [email protected]_registry(new id wl_registry@31)
  [2642555.271]  -> [email protected](new id wl_callback@32)
  [2642555.460] [email protected]_id(32)
  [2642555.464] [email protected](1, fd 13, 74042)
  [2642557.006] [email protected]_info(33, 500)
  [2642557.015] [email protected](1, "wl_compositor", 5)
  [2642557.020]  -> [email protected](1, "wl_compositor", 1, new id 
[unknown]@33)
  [2642557.026] [email protected](2, "wl_drm", 2)
  [2642557.030] [email protected](3, "wl_shm", 1)
  [2642557.033] [email protected](5, "wl_output", 2)
  [2642557.038] [email protected](6, "zxdg_output_manager_v1", 3)
  [2642557.042] [email protected](7, "wl_data_device_manager", 3)
  [2642557.047] [email protected](8, 
"zwp_primary_selection_device_manager_v1", 1)
  [2642557.054] [email protected](9, 
"gtk_primary_selection_device_manager", 1)
  [2642557.058] [email protected](10, "wl_subcompositor", 1)
  [2642557.063] [email protected](11, "xdg_wm_base", 4)
  [2642557.068] [email protected](12, "zxdg_shell_v6", 1)
  [2642557.073] [email protected](13, "gtk_shell1", 5)
  [2642557.077] [email protected](14, "wp_viewporter", 1)
  [2642557.082] [email protected](15, "zwp_pointer_gestures_v1", 3)
  [2642557.086] [email protected](16, "zwp_tablet_manager_v2", 1)
  [2642557.091] [email protected](17, "wl_seat", 5)
  [2642557.095] [email protected](18, "zwp_relative_pointer_manager_v1", 1)
  [2642557.100] [email protected](19, "zwp_pointer_constraints_v1", 1)
  [2642557.104] [email protected](20, "zxdg_exporter_v1", 1)
  [2642557.109] [email protected](21, "zxdg_importer_v1", 1)
  [2642557.113] [email protected](22, "zwp_linux_dmabuf_v1", 4)
  [2642557.118] [email protected](23, 
"zwp_keyboard_shortcuts_inhibit_manager_v1", 1)
  [2642557.122] [email protected](24, "zwp_text_input_manager_v3", 1)
  [2642557.127] [email protected](25, "wp_presentation", 1)
  [2642557.132] [email protected](26, "xdg_activation_v1", 1)
  [2642557.136] [email protected](23196)
  [2642560.279]  -> [email protected]_registry(new id wl_registry@32)
  [2642560.289]  -> [email protected](new id wl_callback@34)
  [2642560.458] [email protected]_id(34)
  [2642560.461] [email protected](1, "wl_compositor", 5)
  [2642560.465] [email protected](2, "wl_drm", 2)
  [2642560.469] [email protected](3, "wl_shm", 1)
  [2642560.473] [email protected](5, "wl_output", 2)
  [2642560.477] [email protected](6, "zxdg_output_manager_v1", 3)
  [2642560.481] [email protected](7, "wl_data_device_manager", 3)
  [2642560.484] [email protected](8, 
"zwp_primary_selection_device_manager_v1", 1)
  [2642560.488] [email protected](9, 
"gtk_primary_selection_device_manager", 1)
  [2642560.492] [email protected](10, "wl_subcompositor", 1)
  [2642560.496] [email protected](11, "xdg_wm_base", 4)
  [2642560.500] [email protected](12, "zxdg_shell_v6", 1)
  [2642560.504] [email protected](13, "gtk_shell1", 5)
  [2642560.510] [email protected](14, "wp_viewporter", 1)
  [2642560.516] [email protected](15, "zwp_pointer_gestures_v1", 3)
  [2642560.521] [email protected](16, "zwp_tablet_manager_v2", 1)
  [2642560.526] [email protected](17, "wl_seat", 5)
  [2642560.531] [email protected](18, "zwp_relative_pointer_manager_v1", 1)
  [2642560.536] [email protected](19, "zwp_pointer_constraints_v1", 1)
  [2642560.541] [email protected](20, "zxdg_exporter_v1", 1)
  [2642560.545] [email protected](21, "zxdg_importer_v1", 1)
  [2642560.550] [email protected](22, "zwp_linux_dmabuf_v1", 4)
  [2642560.554] [email protected](23, 
"zwp_keyboard_shortcuts_inhibit_manager_v1", 1)
  [2642560.559] [email protected](24, "zwp_text_input_manager_v3", 1)
  [2642560.564] [email protected](25, "wp_presentation", 1)
  [2642560.569] [email protected](26, "xdg_activation_v1", 1)
  [2642560.573] [email protected](23196)
  [2642562.267]  -> [email protected]_registry(new id wl_registry@34)
  [2642562.275]  -> [email protected](new id wl_callback@35)
  [2642562.429] [email protected]_id(35)
  [2642562.433] [email protected](1, "wl_compositor", 5)
  [2642562.439] [email protected](2, "wl_drm", 2)
  [2642562.445] [email protected](3, "wl_shm", 1)
  [2642562.452] [email protected](5, "wl_output", 2)
  [2642562.457] [email protected](6, "zxdg_output_manager_v1", 3)
  [2642562.462] [email protected](7, "wl_data_device_manager", 3)
  [2642562.467] [email protected](8, 
"zwp_primary_selection_device_manager_v1", 1)
  [2642562.472] [email protected](9, 
"gtk_primary_selection_device_manager", 1)
  [2642562.476] [email protected](10, "wl_subcompositor", 1)
  [2642562.483] [email protected](11, "xdg_wm_base", 4)
  [2642562.487] [email protected](12, "zxdg_shell_v6", 1)
  [2642562.491] [email protected](13, "gtk_shell1", 5)
  [2642562.496] [email protected](14, "wp_viewporter", 1)
  [2642562.503] [email protected](15, "zwp_pointer_gestures_v1", 3)
  [2642562.508] [email protected](16, "zwp_tablet_manager_v2", 1)
  [2642562.514] [email protected](17, "wl_seat", 5)
  [2642562.518] [email protected](18, "zwp_relative_pointer_manager_v1", 1)
  [2642562.523] [email protected](19, "zwp_pointer_constraints_v1", 1)
  [2642562.529] [email protected](20, "zxdg_exporter_v1", 1)
  [2642562.535] [email protected](21, "zxdg_importer_v1", 1)
  [2642562.540] [email protected](22, "zwp_linux_dmabuf_v1", 4)
  [2642562.549]  -> [email protected](22, "zwp_linux_dmabuf_v1", 3, new id 
[unknown]@36)
  [2642562.557] [email protected](23, 
"zwp_keyboard_shortcuts_inhibit_manager_v1", 1)
  [2642562.563] [email protected](24, "zwp_text_input_manager_v3", 1)
  [2642562.569] [email protected](25, "wp_presentation", 1)
  [2642562.574] [email protected](26, "xdg_activation_v1", 1)
  [2642562.580] [email protected](23196)
  [2642621.315]  -> [email protected]_surface(new id wl_surface@35)
  [2642648.407]  -> [email protected]_surface(new id wl_surface@37)
  [2642648.590]  -> [email protected]_surface(new id wl_surface@38)
  [2642648.682]  -> [email protected]_surface(new id wl_surface@39)
  [2642661.385]  -> [email protected]_xdg_surface(new id xdg_surface@40, 
wl_surface@37)
  [2642661.400]  -> [email protected]_toplevel(new id xdg_toplevel@41)
  [2642661.403]  -> [email protected]_parent(nil)
  [2642661.406]  -> [email protected]_title("Take a Photo")
  [2642661.408]  -> [email protected]_app_id("cheese")
  [2642661.412]  -> [email protected]_gtk_surface(new id gtk_surface1@42, 
wl_surface@37)
  [2642661.416]  -> [email protected]_min_size(557, 195)
  [2642661.419]  -> [email protected]_max_size(0, 0)
  [2642661.422]  -> [email protected]_dbus_properties("org.gnome.Cheese", 
nil, nil, "/org/gnome/Cheese/window/1", "/org/gnome/Cheese", ":1.398")
  [2642661.428]  -> [email protected]_modal()
  [2642661.430]  -> [email protected]()

  (cheese:20772): GLib-GObject-CRITICAL **: 14:44:17.127:
  g_value_dup_string: assertion 'G_VALUE_HOLDS_STRING (value)' failed

  (cheese:20772): GLib-GObject-CRITICAL **: 14:44:17.128: g_value_dup_string: 
assertion 'G_VALUE_HOLDS_STRING (value)' failed
  [2642976.532]  -> [email protected]_registry(new id wl_registry@43)

  (cheese:20772): GLib-GObject-CRITICAL **: 14:44:17.179:
  g_value_dup_string: assertion 'G_VALUE_HOLDS_STRING (value)' failed

  (cheese:20772): GLib-GObject-CRITICAL **: 14:44:17.180: g_value_dup_string: 
assertion 'G_VALUE_HOLDS_STRING (value)' failed
  [2642995.088]  -> [email protected]_subsurface(new id wl_subsurface@44, 
wl_surface@39, wl_surface@37)
  [2642995.111]  -> [email protected]_position(26, 70)
  [2643001.065] [email protected](0, 0, array[0])
  [2643001.083] [email protected](234)
  [2643001.092]  -> [email protected]_buffer_scale(1)
  [2643001.111]  -> [email protected]_configure(234)
  [2643001.115] [email protected](1, "wl_compositor", 5)
  [2643001.126] [email protected](2, "wl_drm", 2)
  [2643001.132] [email protected](3, "wl_shm", 1)
  [2643001.140] [email protected](5, "wl_output", 2)
  [2643001.145] [email protected](6, "zxdg_output_manager_v1", 3)
  [2643001.151] [email protected](7, "wl_data_device_manager", 3)
  [2643001.155] [email protected](8, 
"zwp_primary_selection_device_manager_v1", 1)
  [2643001.162] [email protected](9, 
"gtk_primary_selection_device_manager", 1)
  [2643001.170] [email protected](10, "wl_subcompositor", 1)
  [2643001.176] [email protected](11, "xdg_wm_base", 4)
  [2643001.184] [email protected](12, "zxdg_shell_v6", 1)
  [2643001.192] [email protected](13, "gtk_shell1", 5)
  [2643001.198] [email protected](14, "wp_viewporter", 1)
  [2643001.202] [email protected](15, "zwp_pointer_gestures_v1", 3)
  [2643001.209] [email protected](16, "zwp_tablet_manager_v2", 1)
  [2643001.218] [email protected](17, "wl_seat", 5)
  [2643001.223] [email protected](18, "zwp_relative_pointer_manager_v1", 1)
  [2643001.230] [email protected](19, "zwp_pointer_constraints_v1", 1)
  [2643001.237] [email protected](20, "zxdg_exporter_v1", 1)
  [2643001.243] [email protected](21, "zxdg_importer_v1", 1)
  [2643001.248] [email protected](22, "zwp_linux_dmabuf_v1", 4)
  [2643001.253] [email protected](23, 
"zwp_keyboard_shortcuts_inhibit_manager_v1", 1)
  [2643001.264] [email protected](24, "zwp_text_input_manager_v3", 1)
  [2643001.271]  -> [email protected](24, "zwp_text_input_manager_v3", 1, new 
id [unknown]@45)
  [2643001.282]  -> [email protected]_text_input(new id 
zwp_text_input_v3@46, wl_seat@21)
  [2643001.288] [email protected](25, "wp_presentation", 1)
  [2643001.296] [email protected](26, "xdg_activation_v1", 1)
  [2643004.292]  -> [email protected]_pool(new id wl_shm_pool@47, fd 52, 2241536)
  [2643004.306]  -> [email protected]_buffer(new id wl_buffer@48, 0, 704, 
796, 2816, 0)
  [2643006.411]  -> [email protected](wl_buffer@48, 0, 0)
  [2643006.426]  -> [email protected]_buffer_scale(1)
  [2643006.433]  -> [email protected](0, 0, 704, 796)
  [2643006.442]  -> [email protected]_min_size(557, 195)
  [2643006.447]  -> [email protected]_max_size(0, 0)
  [2643006.452]  -> [email protected]_window_geometry(26, 23, 652, 744)
  [2643006.462]  -> [email protected]_region(new id wl_region@49)
  [2643006.467]  -> [email protected](38, 23, 628, 12)
  [2643006.475]  -> [email protected](26, 35, 652, 732)
  [2643006.485]  -> [email protected]_opaque_region(wl_region@49)
  [2643006.489]  -> [email protected]()
  [2643006.492]  -> [email protected]_region(new id wl_region@50)
  [2643006.495]  -> [email protected](16, 13, 672, 764)
  [2643006.503]  -> [email protected]_input_region(wl_region@50)
  [2643006.508]  -> [email protected]()
  [2643008.123]  -> [email protected](new id wl_callback@51)
  [2643014.909]  -> [email protected](new id wl_callback@52)
  [2643014.956]  -> [email protected](new id wl_callback@53)
  [2643014.965]  -> [email protected]()
  [2643014.973]  -> [email protected]_desync()
  [2643014.982]  -> [email protected]_region(new id wl_region@54)
  [2643014.991]  -> [email protected]_input_region(wl_region@54)
  [2643014.998]  -> [email protected]()
  [2643015.278]  -> [email protected]_params(new id 
zwp_linux_buffer_params_v1@55)
  [2643015.294]  -> [email protected](fd 52, 0, 0, 2608, 
50331648, 6316052)
  [2643015.301]  -> [email protected]_immed(new id 
wl_buffer@56, 652, 549, 875713089, 0)
  [2643015.307]  -> [email protected]()
  [2643015.313]  -> [email protected](wl_buffer@56, 0, 0)
  [2643015.318]  -> [email protected](0, 0, 652, 549)
  [2643015.322]  -> [email protected]()
  [2643015.333]  -> [email protected](new id wl_callback@57)
  [2643017.390] [email protected]_id(49)
  [2643017.397] [email protected]_id(54)
  [2643017.394] [email protected]_id(50)
  [2643017.403] [email protected](nil, 7, "failed to import supplied dmabufs: 
Arguments are inconsistent (for example, a valid context requires buffers not 
supplied by a ")
  [2643017.411] [email protected]()
  Gdk-Message: 14:44:17.210: Error 71 (Protocol error) dispatching to Wayland 
display.

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