As a workaround, I had to unset GPG_AGENT_INFO in my .bashrc and in my Thunderbird starter button.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-keyring in Ubuntu. https://bugs.launchpad.net/bugs/1387747 Title: No longer asks for passphrase, no access to private key Status in gnome-keyring package in Ubuntu: New Bug description: I'm using Thunderbird with Enigmail on Trusty in KDE. I've set /usr/bin/gpg (i.e., GPG 1, not GPG 2) as GPG path in Enigmail. My GPG key is stored on a YubiKey Neo. This has worked fine until yesterday. Yesterday, after the following update: gnome-keyring:amd64 3.10.1-1ubuntu4 -> 3.10.1-1ubuntu4.1 … Thunderbird/Enigmail no longer asks me for me passphrase when I open an encrypted e-mail or when I try to sign an e-mail. Instead, I directly see the error message "no private key available". A downgrade to 3.10.1-1ubuntu4 and a reboot solves the problem. Updating again to 3.10.1-1ubuntu4.1 makes the problem appear again. There also have been a kernel update and an update of libykpers. Those do nott seem to have caused the problem: Downgrading them (or booting the older kernel) does not solve the problem. Only the downgrade of gnome-keyring solves it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-keyring/+bug/1387747/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp