When I type in a terminal git -T git@github.com the dialog with the title "Unlock private key" appears with password entry field.
I guess it is Gnome Keyring SSH Agent, and I would like not to use it but to use instead ssh-add command to add keys.
I edited /etc/xdg/autostart/gnome-keyring-ssh.desktop but that didn't help. In "Startup Applications" settings it looks as disabled.
1 [Desktoktop Entry]
2 Type=Application
3 Name=SSH Key Agent
4 Comment=GNOME Keyring: SSH Agent
5 Exec=/usr/bin/gnome-keyring-daemon --start --components=ssh
6 OnlyShowIn=GNOME;Unity;
7 X-GNOME-Autostart-Phase=Initialization
8 X-GNOME-AutoRestart=false
9 X-GNOME-Autostart-Notify=false
10 X-GNOME-Bugzilla-Bugzilla=GNOME
11 X-GNOME-Bugzilla-Product=gnome-keyring
12 X-GNOME-Bugzilla-Component=general
13 X-GNOME-Bugzilla-Version=3.2.2
14 NoDisplay=false
15 X-Ubuntu-Gettext-Domain=gnome-keyring
Finaly how can I disable Gnome SSH Agent?