HDMI audio not working

maheshsub00 · 02-03-2010, 10:47 AM

I have a Mythbuntu 9.0.4 fresh install and seem to be having issues with audio over HDMI. I can get audio over the headset output (green round port).

I am guessing this probably has something to do with the default sound card that is used to output when I play something, say internet radio. But I can't figure out how to configure Ubuntu to use the HDMI output as default. Any help is appreciated.

The motherboard is:
http://www.legitreviews.com/article/691/1/

Output of the following:
$ cat /proc/asound/cards
0 [SB ]: HDA-Intel - HDA ATI SB
HDA ATI SB at 0xfe7f4000 irq 16
1 [HDMI ]: HDA-Intel - HDA ATI HDMI
HDA ATI HDMI at 0xfe9e8000 irq 19

Output of the following:
$ cat /proc/asound/modules
0 snd_hda_intel
1 snd_hda_intel

Output of the following:
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: STAC92xx Digital [STAC92xx Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0

Output of the following:
$ aplay -L
default:CARD=SB
HDA ATI SB, STAC92xx Analog
Default Audio Device
front:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Analog
Front speakers
surround40:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=SB,DEV=0
HDA ATI SB, STAC92xx Digital
IEC958 (S/PDIF) Digital Audio Output
null
Discard all samples (playback) or generate zero samples (capture)
hdmi:CARD=HDMI
HDA ATI HDMI, ATI HDMI
HDMI Audio Output

Thanks,
Mahesh

Pearlseattle · 02-10-2010, 03:43 PM

Hi
I have this...

Code:

cat /proc/asound/pcm 
00-03: NVIDIA HDMI : NVIDIA HDMI : playback 1
01-00: CMI8738-MC6 : C-Media PCI DAC/ADC : playback 1 : capture 1
01-01: CMI8738-MC6 : C-Media PCI 2nd DAC : playback 1
01-02: CMI8738-MC6 : C-Media PCI IEC958 : playback 1 : capture 1

...and if I want to play something over HDMI I do e.g. ...

Code:

mplayer <myfile> -ao alsa:device=hw=00.03

...while if I want to play it through the surround system using an optical digital cable I do...

Code:

mplayer -afm hwac3 <myfile> -ao alsa:device=hw=01.02

Hope it helps.