Problems with 5.1 digital out on Ubuntu 12.04

Discussion in 'Linux Audio / Video' started by cholten99, Oct 17, 2012.

  1. cholten99

    cholten99 New Member

    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    0
    I've recently bought a new PC, installed Ubuntu and am now unable to get 5.1 digital sound working. Simple analogue stereo works fine on both the front and rear connectors.

    On my old box I connected the coax connection from my soundcard to my surround sound amplifier, set Settings->Sound to "Digital Stereo Duplex" and it worked.

    My old soundcard doesn't fit in my new machine so I'm using the build-in sound hardware. I'm connecting the combination output socket on the back of the PC via the same cable to my surround amp as before.

    The MB is an MSI Global H61M-P31 with an RealTek ALC887 sound chip.

    When I go to Settings->Sound I only see "Headphone Built-in Audio" and "Analogue Output Built-in Audio" - no digitial options.

    The output from aplay -l is:

    default
    Playback/recording through the PulseAudio sound server
    sysdefault:CARD=PCH
    HDA Intel PCH, ALC887-VD Analog
    Default Audio Device
    front:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    Front speakers
    surround40:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    4.0 Surround output to Front and Rear speakers
    surround41:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
    surround50:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    5.0 Surround output to Front, Center and Rear speakers
    surround51:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
    surround71:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
    dmix:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    Direct sample mixing device
    dsnoop:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    Direct sample snooping device
    hw:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    Direct hardware device without any conversions
    plughw:CARD=PCH,DEV=0
    HDA Intel PCH, ALC887-VD Analog
    Hardware device with all software conversions

    While googling for ALC887 I've seen some references to "ALC887 -VD Analog" and some to "ALC887 -VD Digital". Does anyone know if I need to force it to chance mode somehow?


    Thanks for any help.

Share This Page