I'm using Deja-Dup for years to backup my desktop system to a local NAS. A while ago it stopped working. I tried using a new, clean destination folder on the NAS as well as numerous hints from the web, all without success.
DUPLICITY: . GPG error detail: Traceback (innermost last):
DUPLICITY: . File "/usr/bin/duplicity", line 1555, in <module>
DUPLICITY: . with_tempdir(main)
DUPLICITY: . File "/usr/bin/duplicity", line 1541, in with_tempdir
DUPLICITY: . fn()
DUPLICITY: . File "/usr/bin/duplicity", line 1393, in main
DUPLICITY: . do_backup(action)
DUPLICITY: . File "/usr/bin/duplicity", line 1414, in do_backup
DUPLICITY: . sync_archive()
DUPLICITY: . File "/usr/bin/duplicity", line 1204, in sync_archive
DUPLICITY: . copy_to_local(fn)
DUPLICITY: . File "/usr/bin/duplicity", line 1150, in copy_to_local
DUPLICITY: . copy_raw(src_iter, tdp.name)
DUPLICITY: . File "/usr/bin/duplicity", line 1068, in copy_raw
DUPLICITY: . data = src_iter.next().data
DUPLICITY: . File "/usr/bin/duplicity", line 1132, in next
DUPLICITY: . self.fileobj.close()
DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/dup_temp.py", line 227, in close
DUPLICITY: . assert not self.fileobj.close()
DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 305, in close
DUPLICITY: . self.gpg_failed()
DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 272, in gpg_failed
DUPLICITY: . raise GPGError(msg)
DUPLICITY: . GPGError: GPG Failed, see log below:
DUPLICITY: . ===== Begin GnuPG log =====
DUPLICITY: . gpg: WARNING: "--no-use-agent" is an obsolete option - it has no effect
DUPLICITY: . gpg: AES256 encrypted data
DUPLICITY: . gpg: encrypted with 1 passphrase
DUPLICITY: . gpg: decryption failed: Bad session key
DUPLICITY: . ===== End GnuPG log =====
DUPLICITY: .
DUPLICITY: .
DUPLICITY: ERROR 31 GPGError
DUPLICITY: . GPGError: GPG Failed, see log below:
DUPLICITY: . ===== Begin GnuPG log =====
DUPLICITY: . gpg: WARNING: "--no-use-agent" is an obsolete option - it has no effect
DUPLICITY: . gpg: AES256 encrypted data
DUPLICITY: . gpg: encrypted with 1 passphrase
DUPLICITY: . gpg: decryption failed: Bad session key
DUPLICITY: . ===== End GnuPG log =====
DUPLICITY: .
I use Ubuntu Linux 18.04 with Deja-Dup 37.1, Duplicity 0.7.17 and GnuPG 2.2.4.
