Conflict among thunderbird, enigmail, gpg, gpg-agent, and gnome

[James Moe <jimoe sohnen-moe com>]

Hello,
  opensuse 42.1
  gnome 3.16.2
  thunderbird 38.6.0
  enigmail 1.9 (20160223-1641)
  gpg 2.0.24

  A recent error that has occurred while sending mail:

2016-03-01 11:37:48.420 [DEBUG] errorHandling.jsm: parseErrorOutputWith:
statusFlags = 00400000
2016-03-01 11:37:48.420 [DEBUG] errorHandling.jsm: parseErrorOutputWith:
return with c.errorMsg = gpg: WARNING: The GNOME keyring manager
hijacked the GnuPG agent.
gpg: WARNING: GnuPG will not work properly - please configure that tool
to not interfere with the GnuPG system!

  How do I configure Gnome keyring manager?

-- 
James Moe
moe dot james at sohnen-moe dot com
520.743.3936