The signatures check does work but not the message encryption or signature. I'm using Qubes 3.2Rc1 and using Debian 8 as the template and I have all the dom0 and template updates up to date. Apparently it seems that the gnome-keyring is hijacking the gpg agent:
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! [GNUPG:] ERROR check_hijacking 33554509 ---- Sent using GuerrillaMail.com Block or report abuse: https://www.guerrillamail.com/abuse/?a=UFR2AB5NVqcQmh2U93EQdRjCStifx8dDiadNcQ%3D%3D -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/48cd3ebb149fc5ae977b34f06c40dc754c79%40guerrillamail.com. For more options, visit https://groups.google.com/d/optout.