I guess one character in your screenshot comes from the Japanese font Kochi Mincho and the other comes from a Chinese font, because Kochi Mincho comes before the Chinese fonts in the standard aliases (serif, sans-serif, and mono) of the default font.conf.
I always create /etc/fonts/local.conf, which is adapted from /usr/share /language-selector/fontconfig/zh_CN, to override the default preference sequence. I am attaching my local.conf for your reference. ** Attachment added: "local.conf" http://librarian.launchpad.net/4955389/local.conf -- Some chinese character antialiased, some not https://launchpad.net/bugs/70041 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
