Are you able to get a log from PulseAudio at the time of reproducing this hang?
Are you also able to get some info from an affected machine with apport- collect 1092951? Thanks -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1092951 Title: AMD 7000 Series GPU Hangs on Ubuntu 12.04 Status in “alsa-driver” package in Ubuntu: New Bug description: 12.04 will automatically update to 12.04.1 if you install all the available updates. As of our testing last week, a fully up to date 12.04.1 build still experienced the hang. The problem only affects discrete graphics and apus with gpus in the 7000 series. The easiest way to reproduce is to open "system settings" and try to open the sound options. In the machines affected by the issue, the sound options icon will hang and lock the system settings app as soon as it is clicked. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1092951/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

