Public bug reported:

Distribution: 14.04
xubuntu-desktop version 2.180

After logging out of an xubuntu session two user processes are left
running:

UID        PID  PPID  C STIME TTY          TIME CMD
osd99     3872     1  0 12:17 ?        00:00:00 xfce4-power-manager --restart 
--sm-client-id 2545ef3de-f0a8-49fb-90dd-25467f5
osd99     3903     1  0 12:17 ?        00:00:00 
/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1

strace tells me they're both waiting for something:

root@wocbox:~# strace -p 3872
Process 3872 attached
futex(0x7f4b8853a590, FUTEX_WAIT_PRIVATE, 2, NULL^CProcess 3872 detached
 <detached ...>
root@wocbox:~# strace -p 3903
Process 3903 attached
futex(0x99ce54, FUTEX_WAIT_PRIVATE, 1, NULL^CProcess 3903 detached
 <detached ...>

I'd expect logout from a GUI session to kill processes like these.

** Affects: xubuntu-meta (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1319787

Title:
  Processes remain after xubuntu logout

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