Bug#886654: systemd : >12 user processes are left running even after checking out of an X Session

[Erich Minderlein]

Package: systemd
Version: 232-25+deb9u1
Severity: normal

-- Package-specific info:

-- System Information:
Debian Release: 9.3
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), 
LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  adduser         3.115
ii  libacl1         2.2.52-3+b1
ii  libapparmor1    2.11.0-3
ii  libaudit1       1:2.6.7-2
ii  libblkid1       2.29.2-1
ii  libc6           2.24-11+deb9u1
ii  libcap2         1:2.25-1
ii  libcryptsetup4  2:1.7.3-4
ii  libgcrypt20     1.7.6-2+deb9u2
ii  libgpg-error0   1.26-2
ii  libidn11        1.33-1
ii  libip4tc0       1.6.0+snapshot20161117-6
ii  libkmod2        23-2
ii  liblz4-1        0.0~r131-2+b1
ii  liblzma5        5.2.2-1.2+b1
ii  libmount1       2.29.2-1
ii  libpam0g        1.1.8-3.6
ii  libseccomp2     2.3.1-2.1
ii  libselinux1     2.6-3+b3
ii  libsystemd0     232-25+deb9u1
ii  mount           2.29.2-1
ii  procps          2:3.3.12-3
ii  util-linux      2.29.2-1

Versions of packages systemd recommends:
ii  dbus            1.10.24-0+deb9u1
ii  libpam-systemd  232-25+deb9u1

Versions of packages systemd suggests:
ii  policykit-1        0.105-18
pn  systemd-container  <none>
pn  systemd-ui         <none>

Versions of packages systemd is related to:
pn  dracut           <none>
ii  initramfs-tools  0.130
ii  udev             232-25+deb9u1


Hi all

What is :

When checking out from X session as user 1000 and checking in as user 1001,
I had bad performance on my relatively limited notebook.

( different purpose = different user )

I found, as being root, that the following processes were left running, 
owned by user 1000(md)
This applies at least to users 1000 and 1001 , on my system, as I use 
only these 2 accounts.

  PPID   PID  PGID   SID TTY      TPGID STAT   UID   TIME COMMAND
     1  2568  2568  2568 ?           -1 Ss    1000   0:00 
/lib/systemd/systemd --user
  2568  2574  2568  2568 ?           -1 S     1000   0:00 (sd-pam)
     1  2585  2584  2584 ?           -1 Sl    1000   0:00 
/usr/bin/gnome-keyring-daemon --daemonize --login
  2568  2595  2595  2595 ?           -1 Ss    1000   0:00 
/usr/bin/dbus-daemon --session --address=systemd: --nofork --nopidfile 
--systemd-activation
  2568  2639  2595  2595 ?           -1 Sl    1000   0:00 
/usr/lib/dconf/dconf-service
  2568  2658  2658  2658 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfsd
  2568  2711  2658  2658 ?           -1 Sl    1000   0:00 
/usr/lib/gvfs/gvfsd-trash --spawner :1.14 /org/gtk/gvfs/exec_spaw/0
  2568  2721  2721  2721 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfs-udisks2-volume-monitor
  2568  2760  2760  2760 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfs-afc-volume-monitor
  2568  2766  2766  2766 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfs-mtp-volume-monitor
  2568  2770  2770  2770 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfs-goa-volume-monitor
  2568  2774  2774  2774 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfs-gphoto2-volume-monitor
  2568  2823  2823  2823 ?           -1 Ssl   1000   0:00 
/usr/lib/gvfs/gvfsd-metadata
     1  3789  3788  3788 ?           -1 Sl    1000   0:00 
/usr/bin/gnome-keyring-daemon --daemonize --login

X Server / gnome / mate seems not to maintain a log of which processes 
are being invoked and with what PID to purpose of killing them properly

What should be:

I feel, that no processes of a checked out user with uid >= 1000 shall 
be left unintentionally running after checkout and not survive the 
restart of the X server. (
batch, intended background or user cron jobs excluded of course )

Systemd shall do the clean-up after a logout, and make sure that all 
processes are terminated or killed properly before the restart of the X 
server. with the variety of X servers, graphic Front-ends and console 
terminals.

I ask you kindly to modify systemd to clean up properly on log out from 
the X or console session , or to forward to the correct package

Best regards Erich Minderlein