Other users have reported that Déjà Dup repeatedly prompts for the passphrase over a GPG error (although not necessarily the same as yours) during incremental backups, and only successfully completes full backups. See the following bug report and add duplicate status if appropriate.
https://bugs.launchpad.net/ubuntu/+source/deja-dup/+bug/989750 ** Package changed: deja-dup (Ubuntu) => deja-dup -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to deja-dup in Ubuntu. https://bugs.launchpad.net/bugs/1540286 Title: deja-dup asks for passphrase over and over again when doing incremental backup, never completes Status in Déjà Dup: New Bug description: I’ve been doing backups with deja-dup to an external HDD for several years without any issue. Yesterday though, after manually triggering a backup, deja-dup kept on asking me my passphrase over and over again, after which it would start the "analysis" phase again. The backup would never actually start. I re-ran deja-dup from a terminal, and got the following output: DUPLICITY: INFO 1 DUPLICITY: . GPG error detail: Traceback (most recent call last): DUPLICITY: . File "/usr/bin/duplicity", line 1519, in <module> DUPLICITY: . with_tempdir(main) DUPLICITY: . File "/usr/bin/duplicity", line 1513, in with_tempdir DUPLICITY: . fn() DUPLICITY: . File "/usr/bin/duplicity", line 1370, in main DUPLICITY: . do_backup(action) DUPLICITY: . File "/usr/bin/duplicity", line 1391, in do_backup DUPLICITY: . sync_archive(decrypt) DUPLICITY: . File "/usr/bin/duplicity", line 1179, in sync_archive DUPLICITY: . copy_to_local(fn) DUPLICITY: . File "/usr/bin/duplicity", line 1124, in copy_to_local DUPLICITY: . gpg.GzipWriteFile(src_iter, tdp.name, size=sys.maxsize) DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 395, in GzipWriteFile DUPLICITY: . new_block = block_iter.next() DUPLICITY: . File "/usr/bin/duplicity", line 1104, in next DUPLICITY: . self.fileobj.close() DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/dup_temp.py", line 226, in close DUPLICITY: . assert not self.fileobj.close() DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 256, in close DUPLICITY: . self.gpg_failed() DUPLICITY: . File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 223, in gpg_failed DUPLICITY: . raise GPGError(msg) DUPLICITY: . GPGError: GPG Failed, see log below: DUPLICITY: . ===== Begin GnuPG log ===== DUPLICITY: . gpg: CAST5 encrypted data DUPLICITY: . gpg: encrypted with 1 passphrase DUPLICITY: . gpg: WARNING: encrypted message has been manipulated! DUPLICITY: . ===== End GnuPG log ===== DUPLICITY: . DUPLICITY: . DUPLICITY: ERROR 31 GPGError DUPLICITY: . GPGError: GPG Failed, see log below: DUPLICITY: . ===== Begin GnuPG log ===== DUPLICITY: . gpg: CAST5 encrypted data DUPLICITY: . gpg: encrypted with 1 passphrase DUPLICITY: . gpg: WARNING: encrypted message has been manipulated! DUPLICITY: . ===== End GnuPG log ===== DUPLICITY: . After poking at different things (including entirely deleting ~/.cache /deja-dup), I tried backing up to a new folder on the same external HDD, and the backup completed successfully (obviously it had to do a completely new backup, which took longer). So it looks like the previous backup was somehow corrupted, though I have no idea how that happened. In any case, deja-dup should detect that error condition and display a useful error message, instead of asking for the passphrase over and over again. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: deja-dup 34.0-1ubuntu3 ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6 Uname: Linux 4.2.0-25-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity Date: Mon Feb 1 10:58:22 2016 EcryptfsInUse: Yes InstallationDate: Installed on 2013-11-12 (810 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) SourcePackage: deja-dup UpgradeStatus: Upgraded to wily on 2015-11-01 (91 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/deja-dup/+bug/1540286/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

