Hi - this is quite an old bug now. Qjackctl has moved on to 0.4.2 in Ubuntu's latest releases now.
I have no problems using Qjackctl in Ubuntu Studio (which uses a jack- sink to connect with Pulse Audio for desktop sounds). Then there is no need to use ALSA directly. I am marking this as invalid now. Please report again if it is still a problem. ** Changed in: qjackctl (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/880535 Title: qjackctl blocks audio output on ALSA devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qjackctl/+bug/880535/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs