After reinstalling Ubuntu 14.04 LTS, I got strange symbols in the terminal:
Some fonts seem to be not correctly installed. What fonts are missing?
Perhaps "Inconsolata" font is the missing one, since I could not find it in the "Character Map". Thus I install this font:
sudo apt-get install fonts-inconsolata sudo fc-cache -fv
Then I can see "Inconsolata" in "Character Map".
Nevertheless, I still got the ugly symbols in the terminal. And I've tried using the system fixed width font (Ubuntu Mono). Those "?" symbols were still there. Interestingly, those "?" do not appear in Terminator. Since I installed Powerline Powerline Ubuntu, the problem might come from the Powerline fonts.