Bug#946645: KillUserProcesses=no disregarded for some cgroups

[chrysn]

On Mon, Feb 10, 2020 at 11:25:29AM +0100, Michael Biebl wrote:
> I assume your GNOME session is managed by systemd --user, i.e.
> gnome-session is modelled around systemd --user.
> 
> Might be that is gnome-session that triggers the cleanup of the
> session/processes.
> 
> You could try with a more minimal desktop session, like openbox, and
> start tmux in a xterm there and test if that survices a logout (it should)

In openbox, I could indeed not reproduce this behavior in the sid system
(Opening xterm via right-click / system / xterm, logging out via
right-click / ...) on a first attempt.

In the similarly simple i3wm (where I also saw it on my production
machine; in the sid VM I open the terminal using Win-D; logging out
using Win-Shift-E), the behavior happens on and off: I've seen it in 2
of 8 attempts (all with reboots inbetween).

Even on Gnome, when testing again after the first openbox failures, I
found the behavior to be on and off (seen in 2 out of 3 attempts), all
with no discernable patterns to it.

This is a bug in the bad area of happening often enough to not give up
on it, but erratically enough to place me at a loss on how to provide
better reproducibility to dig down :-/

Kind regards
chrsyn
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