Upgrade to 15.04. Now asks for private key password at boot

Workaround from the bug report. #5:

I use it as Client and have deactivated autostart AUTOSTART="none"

I start it manually, when i need the VPN. In prevuse version, the startscript asked for the password.

Regards Franz

So disable the autostart option in the openvpn config file (/etc/default/openvpn) and it will ask for it when you start it manually.

Another method from comment #8

I ended up rebuilding from source with --enable-systemd=no; that made it work again.

And you can also reboot into Grub and pick the "upstart" option so you revert back to the old method instead of using systemd.