Après mise à jour vers buster, firefox ne se lance pas mais ferme ma session

Tags: #<Tag:0x00007fd6f41983b8> #<Tag:0x00007fd6f41982c8>

Bonjour,
J’ai effectué la mise à jour vers buster, depuis firefox ne se lance pas que cela excepté en mode headless. Au lieu de l’ouverture de fenêtre de l’application, cette action me ferme ma session, je me retrouve sur l’écran de connexion lightdm.
J’ai désinstallé, purgé et réinstallé firefox, supprimé mon profil mais rien n’y fait.

Je n’ai apparemment aucun log lié à firefox enregistré.
voici les logs de /var/log/syslog :

Apr 13 08:05:28 pcn2 pulseaudio[5187]: E: [pulseaudio] backend-ofono.c: Failed to register as a handsfree audio agent with ofono: org.freedesktop.DBus.Error.ServiceUnknown: The name org.ofono was not provided by any .service files
Apr 13 08:05:29 pcn2 systemd[1]: Created slice User Slice of UID 114.
Apr 13 08:05:29 pcn2 systemd[1]: Starting User Runtime Directory /run/user/114...
Apr 13 08:05:29 pcn2 systemd[1]: Started User Runtime Directory /run/user/114.
Apr 13 08:05:29 pcn2 systemd[1]: Starting User Manager for UID 114...
Apr 13 08:05:29 pcn2 systemd[5201]: Reached target Timers.
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on GnuPG cryptographic agent (ssh-agent emulation).
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on GnuPG cryptographic agent and passphrase cache (restricted).
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on GnuPG cryptographic agent and passphrase cache (access for web browsers).
Apr 13 08:05:29 pcn2 systemd[5201]: Reached target Paths.
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on GnuPG network certificate management daemon.
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on GnuPG cryptographic agent and passphrase cache.
Apr 13 08:05:29 pcn2 systemd[5201]: Starting D-Bus User Message Bus Socket.
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on Sound System.
Apr 13 08:05:29 pcn2 systemd[5201]: Listening on D-Bus User Message Bus Socket.
Apr 13 08:05:29 pcn2 systemd[5201]: Reached target Sockets.
Apr 13 08:05:29 pcn2 systemd[5201]: Reached target Basic System.
Apr 13 08:05:29 pcn2 systemd[1]: Started User Manager for UID 114.
Apr 13 08:05:29 pcn2 systemd[1]: Started Session c3 of user lightdm.
Apr 13 08:05:29 pcn2 systemd[5201]: Reached target Default.
Apr 13 08:05:29 pcn2 systemd[5201]: Startup finished in 50ms.
Apr 13 08:05:29 pcn2 systemd[5201]: Started D-Bus User Message Bus.
Apr 13 08:05:29 pcn2 dbus-daemon[5217]: [session uid=114 pid=5217] Activating via systemd: service name='org.a11y.Bus' unit='at-spi-dbus-bus.service' requested by ':1.1' (uid=114 pid=5214 comm="/usr/sbin/lightdm-gtk-greeter ")
Apr 13 08:05:29 pcn2 systemd[5201]: Starting Accessibility services bus...
Apr 13 08:05:29 pcn2 dbus-daemon[5217]: [session uid=114 pid=5217] Successfully activated service 'org.a11y.Bus'
Apr 13 08:05:29 pcn2 systemd[5201]: Started Accessibility services bus.
Apr 13 08:05:29 pcn2 at-spi-bus-launcher[5218]: dbus-daemon[5223]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=114 pid=5214 comm="/usr/sbin/lightdm-gtk-greeter ")
Apr 13 08:05:29 pcn2 dbus-daemon[5217]: [session uid=114 pid=5217] Activating via systemd: service name='org.gtk.vfs.Daemon' unit='gvfs-daemon.service' requested by ':1.3' (uid=114 pid=5214 comm="/usr/sbin/lightdm-gtk-greeter ")
Apr 13 08:05:29 pcn2 systemd[5201]: Starting Virtual filesystem service...
Apr 13 08:05:29 pcn2 at-spi-bus-launcher[5218]: dbus-daemon[5223]: Successfully activated service 'org.a11y.atspi.Registry'
Apr 13 08:05:29 pcn2 at-spi-bus-launcher[5218]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
Apr 13 08:05:29 pcn2 dbus-daemon[5217]: [session uid=114 pid=5217] Successfully activated service 'org.gtk.vfs.Daemon'
Apr 13 08:05:29 pcn2 systemd[5201]: Started Virtual filesystem service.
Apr 13 08:07:08 pcn2 systemd[1]: getty@tty1.service: Succeeded.
Apr 13 08:07:08 pcn2 systemd[1]: getty@tty1.service: Service has no hold-off time (RestartSec=0), scheduling restart.
Apr 13 08:07:08 pcn2 systemd[1]: getty@tty1.service: Scheduled restart job, restart counter is at 1.
Apr 13 08:07:08 pcn2 systemd[1]: Stopped Getty on tty1.
Apr 13 08:07:08 pcn2 systemd[1]: Started Getty on tty1.
Apr 13 08:07:28 pcn2 systemd[1]: Started Session 8 of user vince.
Apr 13 08:07:30 pcn2 systemd[4656]: Started GnuPG cryptographic agent and passphrase cache.
Apr 13 08:07:30 pcn2 gpg-agent[5276]: gpg-agent (GnuPG) 2.2.12 starting in supervised mode.
Apr 13 08:07:30 pcn2 gpg-agent[5276]: using fd 3 for extra socket (/run/user/1000/gnupg/S.gpg-agent.extra)
Apr 13 08:07:30 pcn2 gpg-agent[5276]: using fd 4 for browser socket (/run/user/1000/gnupg/S.gpg-agent.browser)
Apr 13 08:07:30 pcn2 gpg-agent[5276]: using fd 5 for std socket (/run/user/1000/gnupg/S.gpg-agent)
Apr 13 08:07:30 pcn2 gpg-agent[5276]: using fd 6 for ssh socket (/run/user/1000/gnupg/S.gpg-agent.ssh)
Apr 13 08:07:30 pcn2 gpg-agent[5276]: listening on: std=5 extra=3 browser=4 ssh=6
Apr 13 08:09:16 pcn2 systemd[1]: session-c3.scope: Killing process 5196 (lightdm) with signal SIGTERM.
Apr 13 08:09:16 pcn2 systemd[1]: session-c3.scope: Killing process 5214 (lightdm-gtk-gre) with signal SIGTERM.
Apr 13 08:09:16 pcn2 systemd[1]: Stopping Session c3 of user lightdm.
Apr 13 08:09:16 pcn2 systemd[1]: session-c3.scope: Succeeded.
Apr 13 08:09:16 pcn2 systemd[1]: Stopped Session c3 of user lightdm.
Apr 13 08:09:16 pcn2 systemd[1]: Started Session 9 of user vince.
Apr 13 08:09:16 pcn2 at-spi-bus-launcher[4708]: dbus-daemon[4713]: Activating service name='org.a11y.atspi.Registry' requested by ':1.10' (uid=1000 pid=5402 comm="/usr/bin/lxsession -s LXDE -e LXDE ")
Apr 13 08:09:16 pcn2 at-spi-bus-launcher[4708]: dbus-daemon[4713]: Successfully activated service 'org.a11y.atspi.Registry'
Apr 13 08:09:16 pcn2 at-spi-bus-launcher[4708]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
Apr 13 08:09:17 pcn2 NetworkManager[483]: <info>  [1586779757.8153] agent-manager: req[0x55a0ab7ed920, :1.272/org.freedesktop.nm-applet/1000]: agent registered
Apr 13 08:09:18 pcn2 dbus-daemon[482]: [system] Activating service name='org.blueman.Mechanism' requested by ':1.291' (uid=1000 pid=5485 comm="/usr/bin/python3 /usr/bin/blueman-applet ") (using servicehelper)
Apr 13 08:09:19 pcn2 org.blueman.Mechanism[482]: Unable to init server: Could not connect: Connection refused
Apr 13 08:09:19 pcn2 org.blueman.Mechanism[482]: Unable to init server: Could not connect: Connection refused
Apr 13 08:09:19 pcn2 blueman-mechanism: Starting blueman-mechanism 
Apr 13 08:09:19 pcn2 dbus-daemon[482]: [system] Successfully activated service 'org.blueman.Mechanism'
Apr 13 08:09:19 pcn2 blueman-mechanism: /usr/lib/blueman/blueman-mechanism:94: PyGIDeprecationWarning: GObject.timeout_add is deprecated; use GLib.timeout_add instead#012  GObject.timeout_add(1000, self.tick)
Apr 13 08:09:19 pcn2 blueman-mechani[5547]: gtk_icon_theme_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
Apr 13 08:09:19 pcn2 blueman-mechanism: loading Network 
Apr 13 08:09:19 pcn2 blueman-mechanism: loading RfKill 
Apr 13 08:09:19 pcn2 blueman-mechanism: loading Ppp 
Apr 13 08:09:19 pcn2 blueman-mechanism: loading Rfcomm 
Apr 13 08:09:26 pcn2 systemd[1]: Stopping User Manager for UID 114...
Apr 13 08:09:26 pcn2 systemd[5201]: Stopping Virtual filesystem service...
Apr 13 08:09:26 pcn2 systemd[5201]: Stopping Accessibility services bus...
Apr 13 08:09:26 pcn2 systemd[5201]: Stopping D-Bus User Message Bus...
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped target Default.
Apr 13 08:09:26 pcn2 systemd[5201]: dbus.service: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped D-Bus User Message Bus.
Apr 13 08:09:26 pcn2 systemd[5201]: at-spi-dbus-bus.service: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped Accessibility services bus.
Apr 13 08:09:26 pcn2 systemd[5201]: gvfs-daemon.service: Main process exited, code=killed, status=15/TERM
Apr 13 08:09:26 pcn2 systemd[4656]: run-user-114-gvfs.mount: Succeeded.
Apr 13 08:09:26 pcn2 systemd[1]: run-user-114-gvfs.mount: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: run-user-114-gvfs.mount: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: gvfs-daemon.service: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped Virtual filesystem service.
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped target Basic System.
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped target Timers.
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped target Sockets.
Apr 13 08:09:26 pcn2 systemd[5201]: gpg-agent-ssh.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed GnuPG cryptographic agent (ssh-agent emulation).
Apr 13 08:09:26 pcn2 systemd[5201]: dbus.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed D-Bus User Message Bus Socket.
Apr 13 08:09:26 pcn2 systemd[5201]: dirmngr.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed GnuPG network certificate management daemon.
Apr 13 08:09:26 pcn2 systemd[5201]: gpg-agent.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed GnuPG cryptographic agent and passphrase cache.
Apr 13 08:09:26 pcn2 systemd[5201]: gpg-agent-extra.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed GnuPG cryptographic agent and passphrase cache (restricted).
Apr 13 08:09:26 pcn2 systemd[5201]: pulseaudio.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed Sound System.
Apr 13 08:09:26 pcn2 systemd[5201]: gpg-agent-browser.socket: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Closed GnuPG cryptographic agent and passphrase cache (access for web browsers).
Apr 13 08:09:26 pcn2 systemd[5201]: Stopped target Paths.
Apr 13 08:09:26 pcn2 systemd[5201]: Reached target Shutdown.
Apr 13 08:09:26 pcn2 systemd[5201]: systemd-exit.service: Succeeded.
Apr 13 08:09:26 pcn2 systemd[5201]: Started Exit the Session.
Apr 13 08:09:26 pcn2 systemd[5201]: Reached target Exit the Session.
Apr 13 08:09:26 pcn2 systemd[1]: user@114.service: Succeeded.
Apr 13 08:09:26 pcn2 systemd[1]: Stopped User Manager for UID 114.
Apr 13 08:09:26 pcn2 systemd[1]: Stopping User Runtime Directory /run/user/114...
Apr 13 08:09:26 pcn2 systemd[4656]: run-user-114.mount: Succeeded.
Apr 13 08:09:26 pcn2 systemd[1]: run-user-114.mount: Succeeded.
Apr 13 08:09:26 pcn2 systemd[1]: user-runtime-dir@114.service: Succeeded.
Apr 13 08:09:26 pcn2 systemd[1]: Stopped User Runtime Directory /run/user/114.
Apr 13 08:09:26 pcn2 systemd[1]: Removed slice User Slice of UID 114.
Apr 13 08:09:49 pcn2 blueman-mechanism: Exiting 

Le problème semble lié à pulseaudio.

merci pour votre aide