"Overheard" on IRC this might help pinpoint the no audio comes out of
the TV even when "High Definition Audio Controller Digital Stereo
(HDMI)" is selected under "Sound" > "Output" problem.
alex-mayorga@VPCCW1FFXL:~$ more /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xd8d00000 irq 48
1 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xd3080000 irq 16
alex-mayorga@VPCCW1FFXL:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
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https://bugs.launchpad.net/bugs/865782
Title:
Fails to provide video output to TV connected with HDMI cable
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