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Thread: 12.04 Sound not working through HDMI

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  1. #1
    Join Date
    Nov 2012

    12.04 Sound not working through HDMI

    I have lubuntu 12.04 on Vaio VPCYB15AH laptop. I don't get any sound on TV when connected through HDMI. The corresponding control in alsamixer is unmuted (Screen below).

    ┌───────────────────────────── AlsaMixer v1.0.25 ─
    │ Card: HD-Audio Generic F1: Help │
    │ Chip: ATI R6xx HDMI F2: System information │
    │ View: F3:[Playback] F4: Capture F5: All F6: Select sound card
    │ Item: S/PDIF Esc: Exit │
    │ │
    │ ┌──┐ │
    │ │OO│ │
    │ └──┘ │
    │ < S/PDIF >

    My aplay-l output below:
    $ aplay -l

    **** List of PLAYBACK Hardware Devices ****
    card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
    card 1: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog]
    Subdevices: 0/1
    Subdevice #0: subdevice #0

    Any idea how to fix this ?

    Additional information w.r.t sound on this system :
    After installing lubuntu, I did not have any audio/sound output (Speaker, headphone, HDMI). I browsed the other forums and found that either of the solutions below enabled sound on speaker and headphone.

    First answer on swapping cards in alsa.conf worked for me

    Editing .asoundrc file with hw:1.0 also worked

    So I can use both now with auto mute also working. But still unable to get audio working over HDMI even when video display over HDMI works fine.
    Last edited by svee; November 15th, 2012 at 07:42 AM.

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