I already resolved this issue by deleting the links, as described above. I downgraded to 2.11.0-0ubuntu4, and nothing wrong happened. Then I upgraded, and still nothing wrong happened. So there must have been another package update that caused this. I don't know what other package would mess around in /etc/fonts/conf.d.
I will attach the pictures of before and after. ** Attachment added: "This is how it is supposed to look" https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/1333627/+attachment/4169444/+files/1%20fonts%20before%20problem%2C%20and%20after%20fix%20cut.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to fontconfig in Ubuntu. https://bugs.launchpad.net/bugs/1333627 Title: update broke fonts in firefox Status in “fontconfig” package in Ubuntu: Incomplete Bug description: I have Ubuntu Studio 14.04. The updates window popped up and asked me to install updates. Which I did. This somehow broke my font configuration. So that I have blurry fonts in firefox. No other application is affected. I have modified nothing in /etc/fonts/conf.avail. If updates changes the contents of /etc/fonts/conf.d I do not see the purpose of having a conf.avail/conf.d - organization. The purpose must be to let users link or unlink files in conf.d to files in conf.avail. I don't expect updates to create links in /etc/fonts/conf.d that were previously created at installation time or upgrate time. So if I unlink something in /etc/fonts/conf.d I expect it to stay that way. Changes to the files themselves should go in /etc/fonts/conf.avail. Changes to which files are available by default in /etc/fonts/conf.d should be applied only when they are CHANGES. Not reinstall the default links with every update. lsb_release -rd Description: Ubuntu 14.04 LTS Release: 14.04 ~$ apt-cache policy fontconfig fontconfig: Installed: 2.11.0-0ubuntu4.1 Candidate: 2.11.0-0ubuntu4.1 Version table: *** 2.11.0-0ubuntu4.1 0 500 http://no.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages 100 /var/lib/dpkg/status 2.11.0-0ubuntu4 0 500 http://no.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/1333627/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp