I see this error message almost daily (see attachment). I have deja-dup set to daily backups and leave my PC running overnight. Sometimes I manually schedule a backup, then there is no error. When an automatic backup starts while my session is not locked, there is no error. I only encounter the error "invalid argument" when the backup starts while my session is locked overnight (I see the error message next morning when I unlock my session).
Ubuntu 12.10, deja-dup 24.0-0ubuntu1 ** Attachment added: "deja-dup error message dialog box" https://bugs.launchpad.net/ubuntu/+source/deja-dup/+bug/995302/+attachment/3459035/+files/backup%20failed%20invalid%20argument.png -- 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/995302 Title: Backup failed: Invalid Argument Status in “deja-dup” package in Ubuntu: Incomplete Bug description: Automatic daily backup fails with this error message: Das Argument ist ungültig ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: deja-dup 22.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 Date: Sun May 6 02:02:02 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011) SourcePackage: deja-dup UpgradeStatus: Upgraded to precise on 2012-04-17 (18 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/deja-dup/+bug/995302/+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

