Public bug reported:
Sound used to work for all user accounts, but no longer does. Recently
installed Skype but do not know how closely that correlates with recent
sound problem. We no longer get the exit sound when logging off from
the primary user account, either. When looking at Sound
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https://bugs.launchpad.net/bugs/845381
Title:
[Realtek ALC861] pactl stat failed to find default card -- works fine
with primary user account but stopped working with other user