The console font in Ubuntu 15.04 can be quite garbled when a console application is loaded that requires ncurses characters to draw an interface. There as easy fix for this.
Run this command in a virtual terminal or a terminal emulator window.
sudo dpkg-reconfigure console-setup
Now choose UTF-8 from this list.
On this screen, choose to automatically guess the optimal character set.
And choose the Terminus font on this screen.
Now choose the appropriate resolution for your console font.
And now we are all done. The right console font has been set and the virtual console will now look as it should.
[email protected]:~$ sudo dpkg-reconfigure console-setup [sudo] password for jason: Your console font configuration will be updated the next time your system boots. If you want to update it now, run 'setupcon' from a virtual console. update-initramfs: deferring update (trigger activated) Processing triggers for initramfs-tools (0.103ubuntu15) ... update-initramfs: Generating /boot/initrd.img-4.3.3-gnu