Signing with GPG fails (regression)

[Steffen Neumann]

Hi,

I have a fresh install of 16.04 since several weeks, and regularly apply updates.
Somewhere along the lines Evolution stopped to sign a mail with gpg, instead
I get the error message:

  Because "gpg: writing to '-'
  gpg: signing failed: No passphrase given
  gpg: signing failed: No passphrase given
  ", you may need to select different mail options.

note the double "gpg: signing failed. Unsure if that is relevant.

gpg --list-keys works, and has the key I have in Prefs -> Mail Accounts -> Edit -> Security

Originally, I got a popup asking for my gpg passphrase, I don't get
that since some update anymore. I'd suspect that is the cluprit.

There is a process gpg-agent running:
gpg-agent --homedir /home/sneumann/.gnupg --use-standard-socket --daemon

=> How to manually invoke the gpg signing with window asking for passphrase ?
Can I check that gpg-agent does what it is supposed to ?

Yours,
Steffen

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: evolution 3.18.5.2-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 22 15:38:29 2016
InstallationDate: Installed on 2016-03-20 (32 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
SourcePackage: evolution
UpgradeStatus: No upgrade log present (probably fresh install)

[Steffen Neumann (sneumann)]

Searching some more, I found that gpg --decrypt foo-message.txt.gpg
launched in the terminal *will* open the gpg-agent passphrase input window.

So it seems evolution is not calling that the right way.

Checking my /var/log/apt/history.log.1.gz it could be that
things broke with 3.18.5.2-0ubuntu1

Yours,
Steffen

[Steffen Neumann (sneumann)]

Searching some more, I found that the problem seems to be due to broken gnome-keyring pgp support. If I don't save the passphrase in the keyring, evolution can send signed mail.
So this should be handled together with gnome-keyring people.

[Nathan M (feydaykyn-z)]

Many thanks, your last comment saved me a few hours ! Did you opened an issue with gnome-keyring ?

[Steffen Neumann (sneumann)]

No Nathan, please do so.