The proximate cause of this was that apt changed to actually notice write errors to its status pipe, but the code in ubiquity has actually been wrong for a long time, and very likely caused missing progress messages.
** Changed in: ubiquity (Ubuntu) Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1020574 Title: SystemError: Broken pipe while installing language packs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1020574/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs