[Pkg-lxde-maintainers] Bug#839074: lxde-core: /proc mounted with option hidepid=2: error "No session for pid <PID of lxpolkit>" when logging in

[Lukas Pirl]

Package: lxde-core
Version: 6
Severity: minor

Dear Maintainer,

   * What led up to the situation?

Mounting /proc with mount option hidepid=2.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

Logging in (i.e. starting a new session).

   * What was the outcome of this action?

A dialog showing the error "No session for pid <PID of lxpolkit>" pops up.
Error does not seem to affect functionality. 

   * What outcome did you expect instead?

No error showing up.

   * Something else?

This error also affects (fresh installs of) Debian testing.

Thanks & best wishes,

Lukas

-- System Information:
Debian Release: 8.6
Architecture: amd64 (x86_64)

Kernel: Linux 4.6.0-0.bpo.1-amd64 (SMP w/24 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages lxde-core depends on:
ii  desktop-file-utils  0.22-1
ii  lxde-common         0.99.0-1
ii  lxpanel             0.7.2-1
ii  openbox             3.5.2-8
ii  pcmanfm             1.2.3-1.1

Versions of packages lxde-core recommends:
pn  gksu                              <none>
ii  lxsession                         0.5.1-2
ii  lxterminal [x-terminal-emulator]  0.2.0-1
pn  xscreensaver                      <none>

Versions of packages lxde-core suggests:
ii  chromium [www-browser]  53.0.2785.113-1~deb8u1
pn  lxde                    <none>
pn  lxlauncher              <none>
ii  w3m [www-browser]       0.5.3-19

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