Recentemente, atualizei as estações de trabalho do Debian 9 para o Debian 10. Com a versão antiga, as pessoas podiam montar drives USB e reproduzir e gravar som (para videoconferências). Após a atualização, nada disso funciona.

Contas de usuários remotos

Houve algumas peculiaridades com as contas de usuário, então talvez essa seja a fonte do problema. Usamos NIS e NFS para fornecer contas de usuário e diretórios pessoais em todas as máquinas. Após a atualização para o Debian 10, precisei adicionar um NISporque /etc/nsswitch.confeles estavam compatantes e agora só tinham files. Também ypbindnão estava em execução porque não era mais usado -broadcastcomo opção de inicialização padrão. Eu adicionei um novo arquivo systemd em /etc/systemd/system/ypbind.service:

[Unit]
Description=ypbind
Wants=network-online.target nis.service
After=network-online.target nis.service

[Service]
Type=simple
ExecStart=/usr/sbin/ypbind -broadcast -foreground

[Install]
WantedBy=multi-user.target

Com isso, as contas de usuário estavam lá e os diretórios pessoais também. Na linha de comando eu também podia fazer login. Mas o gerenciador de exibição LightDM ainda não estava deixando os usuários entrarem. Então na /etc/lightdm/lightdm.confseção [LightDM] eu adicionei a opção greeter-show-manual-login = Truee a partir de então os usuários remotos poderiam fazer login. Algumas máquinas ainda tinham GDM como padrão gerenciador de exibição, lá os logins mostraram o mesmo comportamento que o LightDM fazia antes de eu alterar a configuração. A verificação de senha foi aprovada, a tela pode ficar preta por um breve momento e, em seguida, a tela de login é exibida novamente. O mesmo ocorre quando os usuários ultrapassaram sua cota e os arquivos necessários para estabelecer a sessão ( .Xauthority?) não puderam ser criados.

O curioso é que quando estou logado via SSH e também na tela real, essas sessões aparecem corretamente com who:

$ who
ueding   pts/0        2019-08-26 12:42 (131.220.226.20)
ueding   tty7         2019-08-26 12:43 (:0)

Mas, ao mesmo tempo, a sessão não é listada com loginctl:

$ loginctl
No sessions.

Quando faço o mesmo no meu laptop Fedora 30 pessoal com contas de usuário locais, tenho esta saída de who:

$ who
mu       tty1         2019-08-25 10:33 (:0)
mu       pts/0        2019-08-25 10:34 (:0)
mu       pts/1        2019-08-26 12:08 (:0)
mu       pts/2        2019-08-26 12:14 (:0)
mu       pts/3        2019-08-26 12:42 (:0)
mu       pts/4        2019-08-26 12:38 (:0)
mu       pts/5        2019-08-26 12:55 (:0)

E também loginctlmostra algo sensato:

$ loginctl
SESSION  UID USER SEAT  TTY
      1 1000 mu   seat0    

1 sessions listed.

Eu criei uma nova conta de usuário local com UID 50000 em uma das estações de trabalho Debian 10 e descobri que posso fazer login, fazer a sessão aparecer loginctle também a mídia removível e os problemas de som descritos abaixo não estão lá, som e mídia removível funciona. Então isso definitivamente é um problema com os usuários vindos do NIS.

A única coisa que me atingiu algumas vezes até agora é que, por razões históricas, os IDs de usuário que fornecemos começam com 500. Mas meu usuário uedingtem o uid 1085, então mesmo que isso tenha sido um problema com as contas não listadas, isso account deve funcionar bem porque os valores iniciais padrão para IDs de usuário que não são considerados usuários do sistema são 1000.

Não tenho experiência suficiente, mas tenho a sensação de que, de alguma forma, as contas dos usuários não estão totalmente no sistema, que ainda falta algo.

Um usuário com uid 536 teve que digitar sua senha do chaveiro do GNOME após o login. Não tenho certeza se ele tem senhas diferentes lá, mas também pode ser que não tenha sido desbloqueado durante a inicialização. Isso pode não significar nada, no entanto.

aut.log

Com o estado atual, isso é tudo o que aparece /var/log/auth.logdesde a inicialização da máquina, conectando-se como root via SSH para recuperar o log e efetuando login na própria máquina com meu usuário NIS. Além disso, o monitoringusuário fez login via SSH para recuperar algumas informações para o meu sistema de monitoramento.

Sep  3 12:45:42 helios systemd-logind[497]: New seat seat0.
Sep  3 12:45:42 helios systemd-logind[497]: Watching system buttons on /dev/input/event1 (Power Button)
Sep  3 12:45:42 helios systemd-logind[497]: Watching system buttons on /dev/input/event0 (Power Button)
Sep  3 12:45:42 helios systemd-logind[497]: Watching system buttons on /dev/input/event3 (Cherry USB keyboard)
Sep  3 12:45:42 helios systemd-logind[497]: Watching system buttons on /dev/input/event4 (Cherry USB keyboard System Control)
Sep  3 12:45:46 helios sshd[650]: Server listening on 0.0.0.0 port 22.
Sep  3 12:45:46 helios sshd[650]: Server listening on :: port 22.
Sep  3 12:45:57 helios lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Sep  3 12:45:57 helios systemd-logind[497]: New session c1 of user lightdm.
Sep  3 12:45:57 helios systemd: pam_unix(systemd-user:session): session opened for user lightdm by (uid=0)
Sep  3 12:47:08 helios sshd[1339]: rexec line 16: Deprecated option UsePrivilegeSeparation
Sep  3 12:47:08 helios sshd[1339]: rexec line 19: Deprecated option KeyRegenerationInterval
Sep  3 12:47:08 helios sshd[1339]: rexec line 20: Deprecated option ServerKeyBits
Sep  3 12:47:08 helios sshd[1339]: rexec line 31: Deprecated option RSAAuthentication
Sep  3 12:47:08 helios sshd[1339]: rexec line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:08 helios sshd[1339]: Connection closed by 131.220.226.3 port 39932 [preauth]
Sep  3 12:47:16 helios sshd[1341]: rexec line 16: Deprecated option UsePrivilegeSeparation
Sep  3 12:47:16 helios sshd[1341]: rexec line 19: Deprecated option KeyRegenerationInterval
Sep  3 12:47:16 helios sshd[1341]: rexec line 20: Deprecated option ServerKeyBits
Sep  3 12:47:16 helios sshd[1341]: rexec line 31: Deprecated option RSAAuthentication
Sep  3 12:47:16 helios sshd[1341]: rexec line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:16 helios sshd[1341]: reprocess config line 31: Deprecated option RSAAuthentication
Sep  3 12:47:16 helios sshd[1341]: reprocess config line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:19 helios sshd[1341]: Accepted password for root from 131.220.226.160 port 44060 ssh2
Sep  3 12:47:19 helios sshd[1341]: pam_unix(sshd:session): session opened for user root by (uid=0)
Sep  3 12:47:19 helios systemd-logind[497]: New session 2 of user root.
Sep  3 12:47:19 helios systemd: pam_unix(systemd-user:session): session opened for user root by (uid=0)
Sep  3 12:47:20 helios sshd[1367]: rexec line 16: Deprecated option UsePrivilegeSeparation
Sep  3 12:47:20 helios sshd[1367]: rexec line 19: Deprecated option KeyRegenerationInterval
Sep  3 12:47:20 helios sshd[1367]: rexec line 20: Deprecated option ServerKeyBits
Sep  3 12:47:20 helios sshd[1367]: rexec line 31: Deprecated option RSAAuthentication
Sep  3 12:47:20 helios sshd[1367]: rexec line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:20 helios sshd[1367]: reprocess config line 31: Deprecated option RSAAuthentication
Sep  3 12:47:20 helios sshd[1367]: reprocess config line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:20 helios sshd[1367]: Accepted publickey for monitoring from 131.220.226.3 port 39970 ssh2: RSA SHA256:ulxULyONiGRB8VUFctWd/WSBcRxjGX+5Dq/IXyZS+gI
Sep  3 12:47:20 helios sshd[1367]: pam_unix(sshd:session): session opened for user monitoring by (uid=0)
Sep  3 12:47:20 helios systemd-logind[497]: New session 4 of user monitoring.
Sep  3 12:47:20 helios systemd: pam_unix(systemd-user:session): session opened for user monitoring by (uid=0)
Sep  3 12:47:20 helios sshd[1385]: Received disconnect from 131.220.226.3 port 39970:11: disconnected by user
Sep  3 12:47:20 helios sshd[1385]: Disconnected from user monitoring 131.220.226.3 port 39970
Sep  3 12:47:20 helios sshd[1367]: pam_unix(sshd:session): session closed for user monitoring
Sep  3 12:47:20 helios systemd-logind[497]: Session 4 logged out. Waiting for processes to exit.
Sep  3 12:47:20 helios systemd-logind[497]: Removed session 4.
Sep  3 12:47:30 helios systemd: pam_unix(systemd-user:session): session closed for user monitoring
Sep  3 12:47:32 helios sshd[1398]: rexec line 16: Deprecated option UsePrivilegeSeparation
Sep  3 12:47:32 helios sshd[1398]: rexec line 19: Deprecated option KeyRegenerationInterval
Sep  3 12:47:32 helios sshd[1398]: rexec line 20: Deprecated option ServerKeyBits
Sep  3 12:47:32 helios sshd[1398]: rexec line 31: Deprecated option RSAAuthentication
Sep  3 12:47:32 helios sshd[1398]: rexec line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:32 helios sshd[1398]: reprocess config line 31: Deprecated option RSAAuthentication
Sep  3 12:47:32 helios sshd[1398]: reprocess config line 38: Deprecated option RhostsRSAAuthentication
Sep  3 12:47:32 helios sshd[1398]: Accepted publickey for monitoring from 131.220.226.3 port 39992 ssh2: RSA SHA256:ulxULyONiGRB8VUFctWd/WSBcRxjGX+5Dq/IXyZS+gI
Sep  3 12:47:32 helios sshd[1398]: pam_unix(sshd:session): session opened for user monitoring by (uid=0)
Sep  3 12:47:32 helios systemd-logind[497]: New session 6 of user monitoring.
Sep  3 12:47:32 helios systemd: pam_unix(systemd-user:session): session opened for user monitoring by (uid=0)
Sep  3 12:47:32 helios sshd[1416]: Received disconnect from 131.220.226.3 port 39992:11: disconnected by user
Sep  3 12:47:32 helios sshd[1416]: Disconnected from user monitoring 131.220.226.3 port 39992
Sep  3 12:47:32 helios sshd[1398]: pam_unix(sshd:session): session closed for user monitoring
Sep  3 12:47:32 helios systemd-logind[497]: Session 6 logged out. Waiting for processes to exit.
Sep  3 12:47:32 helios systemd-logind[497]: Removed session 6.
Sep  3 12:47:42 helios systemd: pam_unix(systemd-user:session): session closed for user monitoring
Sep  3 12:48:14 helios lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm
Sep  3 12:48:14 helios systemd-logind[497]: Removed session c1.
Sep  3 12:48:14 helios lightdm: pam_unix(lightdm:session): session opened for user ueding by (uid=0)
Sep  3 12:48:14 helios lightdm: pam_systemd(lightdm:session): Failed to create session: No such file or directory
Sep  3 12:48:24 helios systemd: pam_unix(systemd-user:session): session closed for user lightdm

Acho que a penúltima linha é a realmente interessante.

Acompanhando syslog

Sep 04 14:10:10 helios systemd[1]: session-c3.scope: Killing process 28814 (lightdm) with signal SIGTERM.
Sep 04 14:10:10 helios systemd[1]: session-c3.scope: Killing process 28829 (lightdm-gtk-gre) with signal SIGTERM.
Sep 04 14:10:10 helios systemd[1]: Stopping Session c3 of user lightdm.
Sep 04 14:10:10 helios lightdm[28814]: pam_unix(lightdm-greeter:session): session closed for user lightdm
Sep 04 14:10:10 helios systemd[1]: session-c3.scope: Succeeded.
Sep 04 14:10:10 helios systemd[1]: Stopped Session c3 of user lightdm.
Sep 04 14:10:10 helios systemd-logind[497]: Removed session c3.
Sep 04 14:10:10 helios lightdm[28869]: pam_unix(lightdm:session): session opened for user ueding by (uid=0)
Sep 04 14:10:10 helios lightdm[28869]: pam_systemd(lightdm:session): Failed to create session: No such file or directory
Sep 04 14:10:10 helios lightdm[28869]: Failed to open CK session: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.ConsoleKit was not provided by any .service files
Sep 04 14:10:10 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.a11y.Bus' requested by ':1.3' (uid=1085 pid=28933 comm="xfce4-session ")
Sep 04 14:10:10 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.a11y.Bus'
Sep 04 14:10:10 helios org.a11y.Bus[28914]: dbus-daemon[28940]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=1085 pid=28933 comm="xfce4-session ")
Sep 04 14:10:10 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.xfce.Xfconf' requested by ':1.3' (uid=1085 pid=28933 comm="xfce4-session ")
Sep 04 14:10:10 helios org.a11y.Bus[28914]: dbus-daemon[28940]: Successfully activated service 'org.a11y.atspi.Registry'
Sep 04 14:10:10 helios org.a11y.Bus[28914]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
Sep 04 14:10:10 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.xfce.Xfconf'
Sep 04 14:10:11 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.Daemon' requested by ':1.9' (uid=1085 pid=28954 comm="Thunar --sm-client-id 2e9ea3a26-363a-4e06-b723-b6d")
Sep 04 14:10:11 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.Daemon'
Sep 04 14:10:11 helios org.gtk.vfs.Daemon[28914]: fusermount: failed to open mountpoint for reading: Permission denied
Sep 04 14:10:11 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.freedesktop.thumbnails.Thumbnailer1' requested by ':1.16' (uid=1085 pid=28972 comm="xfdesktop --display :0.0 --sm-client-id 24fe00ba0-")
Sep 04 14:10:11 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.freedesktop.Notifications' requested by ':1.20' (uid=1085 pid=28988 comm="xfce4-power-manager --restart --sm-client-id 270b9")
Sep 04 14:10:11 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.freedesktop.Notifications'
Sep 04 14:10:12 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.freedesktop.Tracker1' requested by ':1.28' (uid=1085 pid=29060 comm="gdbus call -e -d org.freedesktop.DBus -o /org/free")
Sep 04 14:10:12 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='ca.desrt.dconf' requested by ':1.29' (uid=1085 pid=29045 comm="light-locker ")
Sep 04 14:10:12 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'ca.desrt.dconf'
Sep 04 14:10:12 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.freedesktop.Tracker1'
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer /usr/bin/gdk-pixbuf-thumbnailer -s %s %u %o
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer evince-thumbnailer -s %s %u %o
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer gnome-thumbnail-font --size %s %u %o
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer /usr/bin/gdk-pixbuf-thumbnailer -s %s %u %o
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer atril-thumbnailer -s %s %u %o
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer /usr/share/blender/scripts/blender-thumbnailer.py %i %o
Sep 04 14:10:12 helios org.freedesktop.thumbnails.Thumbnailer1[28914]: Registered thumbailer /usr/bin/totem-video-thumbnailer -s %s %u %o
Sep 04 14:10:12 helios kernel: traps: light-locker[29045] trap int3 ip:7f6a78690c75 sp:7ffec8e2fea0 error:0 in libglib-2.0.so.0.5800.3[7f6a78658000+7e000]
Sep 04 14:10:12 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gnome.evolution.dataserver.Sources5' requested by ':1.38' (uid=1085 pid=29044 comm="/usr/lib/evolution/evolution-data-server/evolution")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gnome.OnlineAccounts' requested by ':1.40' (uid=1085 pid=29094 comm="/usr/lib/evolution/evolution-source-registry ")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gnome.evolution.dataserver.Sources5'
Sep 04 14:10:13 helios goa-daemon[29107]: goa-daemon version 3.30.1 starting
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gnome.Identity' requested by ':1.41' (uid=1085 pid=29107 comm="/usr/lib/gnome-online-accounts/goa-daemon ")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gnome.OnlineAccounts'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gnome.Identity'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gnome.evolution.dataserver.Calendar7' requested by ':1.38' (uid=1085 pid=29044 comm="/usr/lib/evolution/evolution-data-server/evolution")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.UDisks2VolumeMonitor' requested by ':1.23' (uid=1085 pid=28986 comm="/usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd ")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.UDisks2VolumeMonitor'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.AfcVolumeMonitor' requested by ':1.23' (uid=1085 pid=28986 comm="/usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd ")
Sep 04 14:10:13 helios org.gtk.vfs.AfcVolumeMonitor[28914]: Volume monitor alive
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.AfcVolumeMonitor'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gnome.evolution.dataserver.Calendar7'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gnome.evolution.dataserver.AddressBook9' requested by ':1.43' (uid=1085 pid=29125 comm="/usr/lib/evolution/evolution-calendar-factory ")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.GoaVolumeMonitor' requested by ':1.23' (uid=1085 pid=28986 comm="/usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd ")
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gnome.evolution.dataserver.AddressBook9'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.GoaVolumeMonitor'
Sep 04 14:10:13 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.MTPVolumeMonitor' requested by ':1.23' (uid=1085 pid=28986 comm="/usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd ")
Sep 04 14:10:14 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.MTPVolumeMonitor'
Sep 04 14:10:14 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.GPhoto2VolumeMonitor' requested by ':1.23' (uid=1085 pid=28986 comm="/usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd ")
Sep 04 14:10:14 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.GPhoto2VolumeMonitor'
Sep 04 14:10:14 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.freedesktop.thumbnails.Thumbnailer1'
Sep 04 14:10:14 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Activating service name='org.gtk.vfs.Metadata' requested by ':1.14' (uid=1085 pid=28972 comm="xfdesktop --display :0.0 --sm-client-id 24fe00ba0-")
Sep 04 14:10:14 helios dbus-daemon[28914]: [session uid=1085 pid=28912] Successfully activated service 'org.gtk.vfs.Metadata'
Sep 04 14:10:20 helios systemd[1]: Stopping User Manager for UID 116...
Sep 04 14:10:20 helios systemd[28818]: Stopping D-Bus User Message Bus...
Sep 04 14:10:20 helios gvfsd[28842]: A connection to the bus can't be made
Sep 04 14:10:20 helios systemd[28818]: Stopping Accessibility services bus...
Sep 04 14:10:20 helios systemd[28818]: Stopping Virtual filesystem service...
Sep 04 14:10:20 helios systemd[28818]: Stopped target Default.
Sep 04 14:10:20 helios systemd[28818]: gvfs-daemon.service: Main process exited, code=killed, status=15/TERM
Sep 04 14:10:20 helios systemd[28818]: at-spi-dbus-bus.service: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Stopped Accessibility services bus.
Sep 04 14:10:20 helios systemd[28818]: dbus.service: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Stopped D-Bus User Message Bus.
Sep 04 14:10:20 helios systemd[1]: run-user-116-gvfs.mount: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: run-user-116-gvfs.mount: Succeeded.
Sep 04 14:10:20 helios systemd[25779]: run-user-116-gvfs.mount: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: gvfs-daemon.service: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Stopped Virtual filesystem service.
Sep 04 14:10:20 helios systemd[28818]: Stopped target Basic System.
Sep 04 14:10:20 helios systemd[28818]: Stopped target Sockets.
Sep 04 14:10:20 helios systemd[28818]: gpg-agent-browser.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed GnuPG cryptographic agent and passphrase cache (access for web browsers).
Sep 04 14:10:20 helios systemd[28818]: gpg-agent.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed GnuPG cryptographic agent and passphrase cache.
Sep 04 14:10:20 helios systemd[28818]: gpg-agent-ssh.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed GnuPG cryptographic agent (ssh-agent emulation).
Sep 04 14:10:20 helios systemd[28818]: dirmngr.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed GnuPG network certificate management daemon.
Sep 04 14:10:20 helios systemd[28818]: gpg-agent-extra.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed GnuPG cryptographic agent and passphrase cache (restricted).
Sep 04 14:10:20 helios systemd[28818]: pulseaudio.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed Sound System.
Sep 04 14:10:20 helios systemd[28818]: Stopped target Timers.
Sep 04 14:10:20 helios systemd[28818]: Stopped target Paths.
Sep 04 14:10:20 helios systemd[28818]: dbus.socket: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Closed D-Bus User Message Bus Socket.
Sep 04 14:10:20 helios systemd[28818]: Reached target Shutdown.
Sep 04 14:10:20 helios systemd[28818]: systemd-exit.service: Succeeded.
Sep 04 14:10:20 helios systemd[28818]: Started Exit the Session.
Sep 04 14:10:20 helios systemd[28818]: Reached target Exit the Session.
Sep 04 14:10:20 helios systemd[28819]: pam_unix(systemd-user:session): session closed for user lightdm
Sep 04 14:10:20 helios systemd[1]: [email protected]: Succeeded.
Sep 04 14:10:20 helios systemd[1]: Stopped User Manager for UID 116.
Sep 04 14:10:20 helios systemd[1]: Stopping User Runtime Directory /run/user/116...
Sep 04 14:10:20 helios systemd[25779]: run-user-116.mount: Succeeded.
Sep 04 14:10:20 helios systemd[1]: run-user-116.mount: Succeeded.
Sep 04 14:10:20 helios systemd[1]: [email protected]: Succeeded.
Sep 04 14:10:20 helios systemd[1]: Stopped User Runtime Directory /run/user/116.
Sep 04 14:10:20 helios systemd[1]: Removed slice User Slice of UID 116.

Conclusão atual

Eu sinto que há algo que impede os usuários de se tornarem “totalmente logados”, no sentido de que eles têm uma sessão do Xfce e podem ver seus diretórios pessoais, mas não o suficiente para serem registrados com coisas “chiques” como logindou Pulse Audio . Ou talvez estejam faltando um grupo de usuários especial. Uma conta de usuário local nas máquinas funciona exatamente como esperado, então isso definitivamente é algum problema com as contas de usuário em geral e não com um dos sintomas ( loginctlsaída, som, mídia removível).

Eu realmente não consigo entender isso e não tenho certeza de onde exatamente devo procurar. Ponteiros ou (espero) soluções são muito bem-vindos!