Comment 38 for bug 984785

> is that specific to one of the lightdm greeters?

I don't know if it's specific to unity-greeter. Maybe an Xfce / LXDE user can try the script I attached. There are also some Xubuntu users which commented on this bug.

For those who want to try my script: You should start it only just before requesting shutdown or restart. It produces a lot of output into the logfile (more time -> more output).

> do you mean that it happens at logout?

It happened on shutdown. It seems that makes a difference here (between logout and shutdown I mean; see comment #29).

I did this:
- rm ~/.goutputstream-*
- start ps-log.sh: sudo -b nice -n -19 sh ./ps-log.sh
- start gnome-session-quit --power-off and click on "Shutdown" (This should be the same as top-right button in Unity -> Shutdown -> Shutdown.)

After restarting my computer I looked into ps-log.out:
...
COMMAND
gnome-session
...
FILE CREATED!!! <-- This is the point where my script first sees an ~/.goutputstream-* file.
COMMAND
lightdm
...