Says it didn't install because it was already installed and configured. So not really much indication that something's actually broken in mesa. Maybe a bug in apt or some other area of the installer. If you can reproduce the bug easily, please reopen this bug and list the steps to reproduce it.
** Changed in: mesa (Ubuntu) Status: Confirmed => Invalid -- package libgl1-mesa-dri 7.4-0ubuntu3.2 failed to install/upgrade: https://bugs.launchpad.net/bugs/609506 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs