Thank you for reporting this bug to Ubuntu. Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1451005 Title: "Enable Multicast/RTP sender" does not combine well with "Create separate audio device for Multicast/RTP" Status in pulseaudio package in Ubuntu: Incomplete Bug description: Description: Ubuntu 15.04 Release: 15.04 Under PulseAudio Preferences > Multicast/RTP, when checking "Enable Multicast/RTP sender" and selecting "Create separate audio device for Multicast/RTP". Expected Behaviour: No multicast traffic unless the extra device created for Multicast/RTP is actually in use / selected as an output device. Actual Behaviour: Multicast traffic even though the extra device created for Multicast/RTP is not in use / selected. The multicast traffic completely overloads Wifi which basically results in Wifi being unusable. This seems to be a regression from Ubuntu 14.10 Utopic Unicorn where this worked as expected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1451005/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp