Public bug reported:

It was suggested I provide the following :

ea@ea-lap:~$ sudo lshw -C display

[sudo] password for ea: 
  *-display               
       description: VGA compatible controller
       product: Advanced Micro Devices [AMD] nee ATI
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 1
       bus info: pci@0000:00:01.0
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:52 memory:b0000000-bfffffff ioport:f000(size=256) 
memory:ff700000-ff73ffff


When I plug  a TV into my HDMI port, only the computer screen background
shows on the TV, none of the action taking place on the laptop is shown
on the TV.  and of course there is no sound (my original complaint.

I am using Ubuntu 12.04 LTS, fully updated.  These problems started
after the second last update. I am also providing the output of a
...wget.. suggeted in Launchpad question #192050


 http://www.alsa-project.org/db/?f=7355e6b6a6b98e4956900c82dbc199d1b7fbd494

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/968295

Title:
  No HDMI either sound or activity on the connedted TV

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