[pkg-gnupg-maint] Bug#833596: systemd user service {gpg-agent, dirmngr} breaks GNOME session startup

[Stefano Zacchiroli]

Package: gnupg
Version: 2.1.14-3

Forwarding from debian-devel
https://lists.debian.org/debian-devel/2016/08/msg00093.html , as
requested by dkg.

----- Forwarded message from Stefano Zacchiroli <zack at debian.org> -----

Date: Sat, 6 Aug 2016 12:32:39 +0200
From: Stefano Zacchiroli <zack at debian.org>
To: debian-devel at lists.debian.org
Subject: Re: [pkg-gnupg-maint] Beware of leftover gpg-agent processes
Message-ID: <20160806103239.GA12696 at upsilon.cc>
Resent-From: debian-devel at lists.debian.org

[ quoted text reordered ]

On Fri, Aug 05, 2016 at 02:43:30PM -0400, Daniel Kahn Gillmor wrote:
> The simplest way to see the control group hierarchy is with "systemctl
> status".  When these processes are launched by the user service, they'll
> end up in the user at NNNN.service like this:
[...]
> If they've been autolaunched, they'll end up in the sesion-X.scope
> sub-tree.

It was indeed the case for me: they had been auto-launched.

> > On Fri, Aug 05, 2016 at 12:41:18PM -0400, Daniel Kahn Gillmor wrote:
> >> On desktop systems (where i'd expect the majority of secret key access
> >> happens), for folks who are running systemd, i recommend enabling the
> >> systemd user services, as documented in
> >> /usr/share/doc/{gnupg-agent,dirmngr}/README.Debian :
> >> 
> >>   systemctl --user enable gpg-agent
> >>   systemctl --user enable dirmngr

OTOH, doing this inhibited a proper start of my GNOME session at next
login: only Nautilus started (I can tell because I've it handle my
desktop icons) and I could use it to browse the filesystem, but GNOME
Shell didn't see to be running.  Reverting the above with "disable" [*]
fixed the issue, and at next login GNOME session started properly,
including GNOME Shell.

I haven't yet filed this as a bug report, because my package mix is
kinda unusual at present: Debian testing + hand-picked gpg from
experimental. But it might be useful for you to know about this. Let me
know how I can debug it further and/or if you'd like to move this
discussion into a dedicated bug report (and when).

Cheers.

[*] actually, I manually removed the symlinks from
    .config/systemd/user/default.target.wants/, but AFAICT the effect is
    the same
-- 
Stefano Zacchiroli  . . . . . . .  zack at upsilon.cc . . . . o . . . o . o
Maître de conférences . . . . . http://upsilon.cc/zack . . . o . . . o o
Former Debian Project Leader . . . . . @zacchiro . . . . o o o . . . o .
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