@madbiologist - Thanks for your answer.
No I have 5 of them (display ports from 0 to 4), but actually only the one
connected to display port 4 has audio capability - and pulseaudio volume
control (pavucontrol) is set accordingly.
Despite the pavucontrol showing audio being sent through the 4th
I'm experiencing this bug as well. Can anyone spot a problem with this
configuration?
Linux 14.04LTS clean install
$ uname -srm
Linux 3.13.0-46-generic x86_64
$ grep -Rn radeon.audio /etc/default/grub
11:GRUB_CMDLINE_LINUX_DEFAULT=quiet splash radeon.audio=1
$ xrandr -q
Screen 0: minimum 320 x
