sorry seems mint disables it by default to remove unsafe upgrades to a mint system. so it's not the package just the way it is installed
** Changed in: synaptic (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/896579 Title: missing "mark all upgrades" button To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/896579/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs