Here are the screenshots of the web interface, before and after the fix. Indeed, I have an /etc/cups/mime.types file , and removing this file also fixes the web interface problem. Perhaps this mime.types file comes from an old cups version?
** Attachment added: "Screenshots of the cups web interface" https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1475683/+attachment/4431441/+files/screenshots.tar.gz -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1475683 Title: web interface rendered poorly Status in cups package in Ubuntu: Incomplete Bug description: In Ubuntu Vivid (15.04) the Cups web interface is rendered poorly because the css style sheet (file /usr/share/cups/doc-root/cups.css) is not interpreted correctly. Removing the comment from the first line of the cups.css file fixes the issue. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1475683/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp