Is /usr/share/upstart/sessions/gpg-agent.conf executed?

[ilya40umov]

In my distribution (Linux Mind 18.3, Cinnamon 64bit, 4.13.0-32) I have /usr/share/upstart/sessions/gpg-agent.conf with the following content:

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description "GPG Agent"
author "Stéphane Graber <stgraber@ubuntu.com>"

start on starting xsession-init and (no-pinentry-gnome3 or started dbus)

pre-start script
    GNUPGHOME=$HOME/.gnupg
    [ -d $GNUPGHOME ] || { stop; exit 0; }

    # /etc/X11/Xsession.d/90gpg-agent starts the agent without DBUS,
    # thus can't use pinentry-gnome3
    # but we know we have dbus now, restart gpg-agent
    gpgconf --kill gpg-agent
    gpgconf --launch gpg-agent
    initctl set-env --global GPG_AGENT_INFO=$GNUPGHOME/S.gpg-agent:0:1

    if [ -n "$(gpgconf --list-options gpg-agent | awk -F: '/^enable-ssh-support:/{ print $10 }')" ]; then
        initctl set-env --global SSH_AUTH_SOCK=$GNUPGHOME/S.gpg-agent.ssh
    fi
end script

post-stop script
    gpgconf --kill gpg-agent
    initctl unset-env --global GPG_AGENT_INFO

    if [ -n "$(gpgconf --list-options gpg-agent | awk -F: '/^enable-ssh-support:/{ print $10 }')" ]; then
        initctl unset-env --global SSH_AUTH_SOCK
    fi
end script

Now, I suspect that this file is not being executed (I added some echo "Abc" > $HOME/.gnupg/abc to pre-start, and it did not take any effect when I rebooted my machine), and this is actually a problem for me, because an process of gpg-agent that is running when my laptop boots can't properly talk to its scdaemon. Meaning that I get

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gpg: selecting openpgp failed: Card not present
gpg: OpenPGP card not available: Card not present

Up until I run:

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gpgconf --kill scdaemon && gpgconf --kill gpg-agent && gpgconf --launch gpg-agent

And only then, I can actually access my Yubikey (e.g. run gpg2 --card-status). I'm currently tempted to just restart gpg-agent semi-manually to solve this issue.
However, my question here would be: Is /usr/share/upstart/sessions/gpg-agent.conf actually being run on boot? If not, does Mint run any of the files in that directly at all? If yes, how do I tell which ones are run by upstart?
I would also welcome any other advice!

P.S. Not sure if it's relevant, but I do remember I had to install dbus-user-session to make gpg-agent communicate with pinentry/seahorse and ask me into enter the passphrase for the key.

P.S. I'm on the last stage of setting up my Yubikey in order to being able use it as a GPG smart card (in addition to U2F and generating OAUTH codes), and apart from that little issue I'm already able to use the gpg keys stored on Yubikey for SSH and commit signing.

[ilya40umov]

Looks like I have found the reason of why I was getting

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gpg: selecting openpgp failed: Card not present

and it seems it was the smart card reader that came with my Thinkpad.
Once I have disabled the smart card port in BIOS, the issue (which I was only experiencing after booting the system) was gone.

Anyway, I would still love to know if the job that I mentioned (/usr/share/upstart/sessions/gpg-agent.conf) actually gets executed on boot, along with others from the same directory.

Thanks,
Illia

[thx-1138]

............
Anyway, I would still love to know if the job that I mentioned (/usr/share/upstart/sessions/gpg-agent.conf) actually gets executed on boot, along with others from the same directory.

I'd try lsof...ie. lsof | grep gpg-agent.conf...

I haven't used gpg since a long time, but i'd doubt the above .conf is being used nowadays (as Mint 18 uses systemd, not upstart...)