It is not a bug. We intentionally disable debug output in Debian/Ubuntu (Fedora also does the same thing). It was done in order to solve https://bugs.debian.org/805399.
There are easy workarounds: either what you suggested, or exporting QT_LOGGING_RULES="*.debug=true". ** Bug watch added: Debian Bug tracker #805399 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805399 ** Changed in: qtbase-opensource-src (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1731646 Title: missing qDebug output when creating QT applications To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1731646/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
