On 05 May 2023 04:13, Max Nikulin wrote:
On 05/05/2023 02:07, zithro wrote:
2. using VNC or rdesktop, I then log on to X on the machine, do some
stuff, then hit "log off" from the desktop menu.
Immediately, ALL the previous SSH connections started in step 1 get
closed, hence all the shells and the GUI apps (firefox, etc) !
Have you inspected journalctl output (as root) around the "log off" moment?
Will do, but it's such a PITA ...
A wild guess is that it might be force close of systemd user session,
however it should not happen. Try to compare systemd-cgls (user .slice
and .scope), "loginctl list-users", "loginctl list-sessions" on each step.
I'm a systemd noob, don't really know what you talking about ^^
But seems like the culprit.
Ran those commands (fucking auto pager though, way to break scrolling
... another fail)
So *before* logging in X via VNC :
# systemd-cgls --no-pager
Control group /:
-.slice
├─user.slice
│ ├─user-112.slice
│ │ ├─session-c2.scope
│ │ │ ├─14038 lightdm --session-child 16 19
│ │ │ └─14060 /usr/sbin/lightdm-gtk-greeter
│ │ └─user@112.service …
│ │ ├─app.slice
[snipped unrelated]
│ │ │ ├─at-spi-dbus-bus.service
│ │ │ │ ├─14078 /usr/libexec/at-spi-bus-launcher
│ │ │ │ ├─14083 /usr/bin/dbus-daemon
--config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork
--print-addr…
│ │ │ │ └─14102 /usr/libexec/at-spi2-registryd --use-gnome-session
│ │ │ └─dbus.service
│ │ │ └─14061 /usr/bin/dbus-daemon --session --address=systemd:
--nofork --nopidfile --systemd-activation --syslog-on…
│ │ └─init.scope
│ │ ├─14042 /lib/systemd/systemd --user
│ │ └─14043 (sd-pam)
│ ├─user-0.slice
│ │ ├─session-147.scope
│ │ │ ├─22477 sshd: root@pts/2
│ │ │ ├─22483 -bash
│ │ │ └─22725 systemd-cgls --no-pager
│ │ ├─session-148.scope
│ │ │ ├─22495 sshd: root@pts/3
│ │ │ ├─22501 -bash
│ │ │ └─22521 htop
│ │ ├─session-151.scope
│ │ │ ├─22645 sshd: root@pts/5
│ │ │ └─22651 -bash
│ │ ├─session-145.scope
│ │ │ ├─22440 sshd: root@pts/1
│ │ │ ├─22462 -bash
│ │ │ └─22634 journalctl --no-pager -b 0 --follow
│ │ └─user@0.service …
│ │ └─init.scope
│ │ ├─22443 /lib/systemd/systemd --user
│ │ └─22444 (sd-pam)
│ └─user-1000.slice
│ ├─user@1000.service …
│ │ ├─app.slice
│ │ │ ├─xdg-permission-store.service
│ │ │ │ └─14334 /usr/libexec/xdg-permission-store
│ │ │ ├─xdg-document-portal.service
│ │ │ │ ├─14331 /usr/libexec/xdg-document-portal
│ │ │ │ └─14339 fusermount -o
rw,nosuid,nodev,fsname=portal,auto_unmount,subtype=portal --
/run/user/1000/doc
│ │ │ ├─pulseaudio.service
│ │ │ │ └─14031 /usr/bin/pulseaudio --daemonize=no --log-target=journal
│ │ │ ├─gvfs-daemon.service
│ │ │ │ └─14302 /usr/libexec/gvfsd
│ │ │ ├─at-spi-dbus-bus.service
│ │ │ │ └─14508 /usr/libexec/at-spi-bus-launcher
│ │ │ ├─pipewire.service
│ │ │ │ ├─752 /usr/bin/pipewire
│ │ │ │ └─756 /usr/bin/pipewire-media-session
│ │ │ └─dbus.service
│ │ │ └─13960 /usr/bin/dbus-daemon --session --address=systemd:
--nofork --nopidfile --systemd-activation --syslog-on…
│ │ └─init.scope
│ │ ├─711 /lib/systemd/systemd --user
│ │ └─724 (sd-pam)
│ ├─session-111.scope
│ │ ├─14107 sshd: zithro [priv]
│ │ ├─14113 sshd: zithro@notty
│ │ ├─14114 firejail firefox -p junk -no-remote
│ │ ├─14117 /usr/bin/xdg-dbus-proxy --fd=4 --args=5
│ │ ├─14119 firejail firefox -p junk -no-remote
│ │ ├─14128 firefox-esr -p junk -no-remote
[snipped all threads]
│ ├─session-141.scope
│ │ ├─21925 sshd: zithro [priv]
│ │ ├─21931 sshd: zithro@pts/0
│ │ └─21932 ssh zithro@otherhost
│ ├─session-112.scope
│ │ ├─14239 sshd: zithro [priv]
│ │ ├─14246 sshd: zithro@notty
│ │ ├─14247 firejail thunderbird
│ │ ├─14250 firejail thunderbird
│ │ ├─14259 /usr/lib/thunderbird/thunderbird
│ └─session-149.scope
│ ├─22606 sshd: zithro [priv]
│ ├─22612 sshd: zithro@pts/4
│ └─22613 -bash
├─init.scope
│ └─1 /sbin/init
└─system.slice
├─dbus.service
│ └─471 /usr/bin/dbus-daemon --system --address=systemd: --nofork
--nopidfile --systemd-activation --syslog-only
[snipped rest of slice]
# loginctl list-sessions
SESSION UID USER SEAT TTY
111 1000 zithro
112 1000 zithro
141 1000 zithro pts/0
145 0 root
147 0 root
148 0 root
149 1000 zithro pts/4
151 0 root
c2 112 lightdm seat0
9 sessions listed.
# loginctl list-users
UID USER
0 root
112 lightdm
1000 zithro
3 users listed.
To keep this answer humanly readable, I will post the results of
previous commands after GUI login and after GUI logoff in another answer ...
Perhaps it may be related to user D-Bus sessions, however I would expect
that ssh GUI app has its own bus created by dbus-launch.
Dunno exactly how to report this. In the firefox firejail there's
"xdg-dbus-proxy", but not in the thunderbird firejail.
# ps -eo pid,user,args,cgroup | grep -i dbus
471 message+ /usr/bin/dbus-daemon --syst 0::/system.slice/dbus.service
13960 zithro /usr/bin/dbus-daemon --sess
0::/user.slice/user-1000.slice/user@1000.service/app.slice/dbus.service
14061 lightdm /usr/bin/dbus-daemon --sess
0::/user.slice/user-112.slice/user@112.service/app.slice/dbus.service
14078 lightdm /usr/libexec/at-spi-bus-lau
0::/user.slice/user-112.slice/user@112.service/app.slice/at-spi-dbus-bus.service
14083 lightdm /usr/bin/dbus-daemon --conf
0::/user.slice/user-112.slice/user@112.service/app.slice/at-spi-dbus-bus.service
14102 lightdm /usr/libexec/at-spi2-regist
0::/user.slice/user-112.slice/user@112.service/app.slice/at-spi-dbus-bus.service
14117 zithro /usr/bin/xdg-dbus-proxy --f
0::/user.slice/user-1000.slice/session-111.scope
14508 zithro /usr/libexec/at-spi-bus-lau
0::/user.slice/user-1000.slice/user@1000.service/app.slice/at-spi-dbus-bus.service
Does it happen for newly created user with no customization?
Never tried !
Thanks
