Thank you for taking the time to report this bug and helping to make Ubuntu better.
I was unable to reproduce this issue on my 18.04 system, jackd2 installed without issues. Since you mention that you had a fresh install, could you try checking for (and installing) any updates which may be available. I suspect that the issue might be due to outdated package lists or a temporarily out-of-sync mirror. If the issue persists please attach the full error message you get. When reporting bugs in the future please use apport by using 'ubuntu- bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. ** Changed in: jackd2 (Ubuntu) Status: New => Incomplete ** Tags added: bionic -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to jackd2 in Ubuntu. https://bugs.launchpad.net/bugs/1769977 Title: jackd2 don't install in fresh installation of Ubuntu 18.04 LTS Status in jackd2 package in Ubuntu: Incomplete Bug description: jackd2 package don't install in Ubuntu 18.04 LTS. Broken dependencies, libreadline6 can't be installed anymore. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1769977/+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