gpg: problem with the agent: Not implemented

[Alexandre Demers]

Using Gnome 3, gnupg 1.4.11 and gnupg2 2.0.14, duplicity 0.6.13 and deja-dup 18.1.1 on Ubuntu 11.04 64 bit. When selecting to encrypt backup, Deja Dup always fails saying Bad encryption password. Launching deja-dup with debug shows the following:
DUPLICITY: INFO 1
DUPLICITY: . GPG error detail: Traceback (most recent call last):
DUPLICITY: . File "/usr/bin/duplicity", line 1262, in <module>
DUPLICITY: . with_tempdir(main)
DUPLICITY: . File "/usr/bin/duplicity", line 1255, in with_tempdir
DUPLICITY: . fn()
DUPLICITY: . File "/usr/bin/duplicity", line 1228, in main
DUPLICITY: . full_backup(col_stats)
DUPLICITY: . File "/usr/bin/duplicity", line 417, in full_backup
DUPLICITY: . globals.backend)
DUPLICITY: . File "/usr/bin/duplicity", line 295, in write_multivol
DUPLICITY: . globals.gpg_profile, globals.volsize)
DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 291, in GPGWriteFile
DUPLICITY: . file.close()
DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 180, in close
DUPLICITY: . self.gpg_failed()
DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 165, in gpg_failed
DUPLICITY: . raise GPGError, msg
DUPLICITY: . GPGError: GPG Failed, see log below:
DUPLICITY: . ===== Begin GnuPG log =====
DUPLICITY: . gpg: problem with the agent: Not implemented
DUPLICITY: . ===== End GnuPG log =====
DUPLICITY: .
DUPLICITY: .

DUPLICITY: ERROR 31 GPGError
DUPLICITY: . GPGError: GPG Failed, see log below:
DUPLICITY: . ===== Begin GnuPG log =====
DUPLICITY: . gpg: problem with the agent: Not implemented
DUPLICITY: . ===== End GnuPG log =====
DUPLICITY: .

DUPLICITY: DEBUG 1
DUPLICITY: . Removing still remembered temporary file /home/dema1701/.cache/deja-dup/2b989032691259a82d5345e67ca8897f/duplicity-j8G_RS-tempdir/mktemp-akPCay-1

DUPLICITY: DEBUG 1
DUPLICITY: . Removing still remembered temporary file /home/dema1701/.cache/deja-dup/2b989032691259a82d5345e67ca8897f/duplicity-52isP1-tempdir/mktemp-3P19J7-1

[Michael Terry (mterry)]

This was a problem on Fedora 13 a while ago. Something to do with seahorse-plugins. https://bugzilla.redhat.com/show_bug.cgi?id=622358

This also sounds similar to bug 681002 because it relates to problems with the gpg agent. That bug lists killing gnome-keyring-daemon as a workaround. Does that help?

[Alexandre Demers (oxalin)]

Indeed, killing gnome-keyring-daemon does do the trick. So it's more like 681002 than 622358.

[Michael Terry (mterry)]

OK, I think I fixed this. Basically, Deja Dup never needs to use a gpg agent, and using an agent isn't even enabled in gpg by default normally. But it is enable as a global default on (at least) Ubuntu.

I'm not sure why sometimes the agent likes to complain about something being not implemented, but regardless. I've now made Deja Dup pass the --no-use-agent flag to gpg. That will avoid this point of failure in the future.

[Alexandre Demers (oxalin)]

It seems fixed under 20.0 bzr1001.28 (ppa from ubuntu team).