On Fri, 21 Jul 2017 10:50:31 +0200 Yves-Alexis Perez <cor...@debian.org>
wrote:

> When /proc is mounted with hidepid>0 /proc/1/cgroup can't be read (either
> because /proc/1 doesn't exist, if hidepid=2, or because /proc/1/cgroup is not
> readable, if hidepid=1).
> 
> In that case, polkit-gnome-authentication-agent-1 (or lxpolkit, for that
> matter) bails out early.
> 

There is https://bugzilla.redhat.com/show_bug.cgi?id=1130796 which
provides some more background and also mentions a workaround, i.e.
mounting proc with gid=<somegroup> and adding polkitd to that group.
I haven't actually tested that though.
-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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