[Bug 2063028] Re: ubuntu-desktop-bootstrap launcher always crashes when 'Enable display compositing' is unchecked'

[Simon]

** Description changed:

  When installing from a live iso and running ubuntu-desktop-bootstrap
  launcher, the installer always crashes if 'Enable display compositing'
  is unchecked in the 'Window Manager Tweaks' setting.
+ 
+ flutter: INFO ubuntu_bootstrap: Logging to /var/log/installer/ubuntu_bootstrap.log
+ flutter: DEBUG config: Loaded config file from /usr/share/desktop-provision/whitelabel.yaml
+ flutter: INFO flavor_provider: Using flavor from config: UbuntuFlavor.xubuntu
+ flutter: INFO subiquity_server: Waiting server up to 90 seconds
+ flutter: INFO subiquity_server: ApplicationState.WAITING
+ flutter: INFO subiquity_client: Opening socket to Endpoint(/run/subiquity/socket )
+ flutter: DEBUG desktop: Disabling automounting
+ flutter: DEBUG subiquity_client: POST http://localhost/meta/client_variant?variant=%22desktop%22
+ flutter: DEBUG telemetry: Writing report to /var/log/installer/telemetry
+ flutter: DEBUG subiquity_client: ==> setVariant(Variant.DESKTOP) null
+ flutter: INFO subiquity_status: null => ApplicationStatus(state: ApplicationState.WAITING, confirmingTty: , error: null, nonreportableError: null, cloudInitOk: true, interactive: true, echoSyslogId: subiquity_echo.8765, logSyslogId: subiquity_log.8765, eventSyslogId: subiquity_event.8765)
+ flutter: DEBUG subiquity_client: POST http://localhost/meta/mark_configured?endpoint_names=%5B%22mirror%22%2C%22proxy%22%2C%22ssh%22%2C%22snaplist%22%2C%22ubuntu_pro%22%5D
+ flutter: DEBUG subiquity_client: ==> markConfigured([mirror, proxy, ssh, snaplist, ubuntu_pro]) null
+ flutter: ERROR desktop: Failed to set show-volumes to DBusBoolean(false)
+ 	GSettingsSchemaNotInstalledException: GSettings schema org.gnome.shell.extensions.ding not installed
+ flutter: ERROR desktop: Failed to set show-network-volumes to DBusBoolean(false)
+ 	GSettingsSchemaNotInstalledException: GSettings schema org.gnome.shell.extensions.ding not installed
+ flutter: DEBUG desktop: Disabling screen blanking
+ flutter: DEBUG desktop: Disabling screensaver
+ flutter: DEBUG desktop: Inhibiting Gnome session
+ flutter: ERROR desktop: Failed to inhibit Gnome Session
+ 	DBusServiceUnknownException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
+ flutter: INFO subiquity_status: null => ApplicationStatus(state: ApplicationState.WAITING, confirmingTty: , error: null, nonreportableError: null, cloudInitOk: true, interactive: true, echoSyslogId: subiquity_echo.8765, logSyslogId: subiquity_log.8765, eventSyslogId: subiquity_event.8765)
+ flutter: INFO subiquity_status: null => ApplicationStatus(state: ApplicationState.WAITING, confirmingTty: , error: null, nonreportableError: null, cloudInitOk: true, interactive: true, echoSyslogId: subiquity_echo.8765, logSyslogId: subiquity_log.8765, eventSyslogId: subiquity_event.8765)
+ flutter: DEBUG subiquity_client: GET http://localhost/meta/interactive_sections
+ flutter: DEBUG subiquity_client: ==> getInteractiveSections() null
+ flutter: INFO locale: Loaded 75 languages
+ flutter: DEBUG subiquity_client: GET http://localhost/locale
+ flutter: DEBUG subiquity_client: ==> locale() "en_US.UTF-8"
+ flutter: INFO locale: Selected en_US as UI language
+ flutter: ERROR sound_service: Error playing sound with id: system-ready (most likely missing canberra-gtk-play)
+ [xcb] Unknown sequence number while processing queue
+ [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
+ [xcb] Aborting, sorry about that.
+ ubuntu_bootstrap: ../../src/xcb_io.c:278: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
+ Aborted (core dumped)

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https://bugs.launchpad.net/bugs/2063028

Title:
  ubuntu-desktop-bootstrap launcher always crashes when 'Enable display
  compositing' is unchecked'

Status in subiquity package in Ubuntu:
  New

Bug description:
  When installing from a live iso and running ubuntu-desktop-bootstrap
  launcher 'Install Xubuntu 24.04 LTS', the installer always crashes if
  'Enable display compositing' is unchecked in the 'Window Manager
  Tweaks' setting.

  flutter: INFO ubuntu_bootstrap: Logging to /var/log/installer/ubuntu_bootstrap.log
  flutter: DEBUG config: Loaded config file from /usr/share/desktop-provision/whitelabel.yaml
  flutter: INFO flavor_provider: Using flavor from config: UbuntuFlavor.xubuntu
  flutter: INFO subiquity_server: Waiting server up to 90 seconds
  flutter: INFO subiquity_server: ApplicationState.WAITING
  flutter: INFO subiquity_client: Opening socket to Endpoint(/run/subiquity/socket )
  flutter: DEBUG desktop: Disabling automounting
  flutter: DEBUG subiquity_client: POST http://localhost/meta/client_variant?variant=%22desktop%22
  flutter: DEBUG telemetry: Writing report to /var/log/installer/telemetry
  flutter: DEBUG subiquity_client: ==> setVariant(Variant.DESKTOP) null
  flutter: INFO subiquity_status: null => ApplicationStatus(state: ApplicationState.WAITING, confirmingTty: , error: null, nonreportableError: null, cloudInitOk: true, interactive: true, echoSyslogId: subiquity_echo.8765, logSyslogId: subiquity_log.8765, eventSyslogId: subiquity_event.8765)
  flutter: DEBUG subiquity_client: POST http://localhost/meta/mark_configured?endpoint_names=%5B%22mirror%22%2C%22proxy%22%2C%22ssh%22%2C%22snaplist%22%2C%22ubuntu_pro%22%5D
  flutter: DEBUG subiquity_client: ==> markConfigured([mirror, proxy, ssh, snaplist, ubuntu_pro]) null
  flutter: ERROR desktop: Failed to set show-volumes to DBusBoolean(false)
   GSettingsSchemaNotInstalledException: GSettings schema org.gnome.shell.extensions.ding not installed
  flutter: ERROR desktop: Failed to set show-network-volumes to DBusBoolean(false)
   GSettingsSchemaNotInstalledException: GSettings schema org.gnome.shell.extensions.ding not installed
  flutter: DEBUG desktop: Disabling screen blanking
  flutter: DEBUG desktop: Disabling screensaver
  flutter: DEBUG desktop: Inhibiting Gnome session
  flutter: ERROR desktop: Failed to inhibit Gnome Session
   DBusServiceUnknownException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
  flutter: INFO subiquity_status: null => ApplicationStatus(state: ApplicationState.WAITING, confirmingTty: , error: null, nonreportableError: null, cloudInitOk: true, interactive: true, echoSyslogId: subiquity_echo.8765, logSyslogId: subiquity_log.8765, eventSyslogId: subiquity_event.8765)
  flutter: INFO subiquity_status: null => ApplicationStatus(state: ApplicationState.WAITING, confirmingTty: , error: null, nonreportableError: null, cloudInitOk: true, interactive: true, echoSyslogId: subiquity_echo.8765, logSyslogId: subiquity_log.8765, eventSyslogId: subiquity_event.8765)
  flutter: DEBUG subiquity_client: GET http://localhost/meta/interactive_sections
  flutter: DEBUG subiquity_client: ==> getInteractiveSections() null
  flutter: INFO locale: Loaded 75 languages
  flutter: DEBUG subiquity_client: GET http://localhost/locale
  flutter: DEBUG subiquity_client: ==> locale() "en_US.UTF-8"
  flutter: INFO locale: Selected en_US as UI language
  flutter: ERROR sound_service: Error playing sound with id: system-ready (most likely missing canberra-gtk-play)
  [xcb] Unknown sequence number while processing queue
  [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
  [xcb] Aborting, sorry about that.
  ubuntu_bootstrap: ../../src/xcb_io.c:278: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
  Aborted (core dumped)

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