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Thread: No audio via HDMI on HD3450

  1. #1
    Join Date
    Feb 2009
    Posts
    34

    Default No audio via HDMI on HD3450

    I have set up drm and radeonhd using https://help.ubuntu.com/community/RadeonHD

    The audio is enabled and directed to the HDMI connector using:

    Code:
    # xorg.conf (X.Org X Window System server configuration file)
    
    Section "Device"
        Identifier	"HD3450"
        Driver	"radeonhd"
        Option	"Monitor-DVI-D_1" "Aveis A323LT"
        Option	"Audio" "on"
        Option	"HDMI" "DVI-D 1"
        Option	"DRI"
        Option	"AccelMethod"  "exa"
    EndSection
    
    Section "Monitor"
        Identifier	"Aveis A323LT"
        Modeline "1360x768_60.00"  84.72  1360 1424 1568 1776  768 769 772 795  -HSync +Vsync
        Option "PreferredMode" "1360x768_60.00"
    EndSection
    
    Section "Screen"
        Identifier	"Default Screen"
        Monitor	"Aveis A323LT"
        Device	"HD3450"
    EndSection
    
    Section "DRI"
        Mode         0666
    EndSection
    PulseAudio Manager is set to use alsa_output.hw_0_3 as the HD3450 is card 0, device 3.

    When I play a mp3 or mp4 using mplayer, I see output on pavumeter and these lines show up in Xorg.0.log

    (II) RADEONHD(0): RHDHdmiUpdateAudioSettings: playing with 2 channels, 48000 Hz sampling rate, 16 bits per sample,
    (II) RADEONHD(0): RHDHdmiUpdateAudioSettings: 0x01 IEC60958 status bits and 0x00 category code
    alsamixer -c 0 is used to verify output is not muted.

    No Sound --- Any suggestions?

  2. #2
    Join Date
    Oct 2008
    Location
    Poland
    Posts
    185

    Default

    Check man radeonhd again That should be
    Code:
      Option       "Audio" "on"
      Option       "HDMI" "DVI-D_1"

  3. #3
    Join Date
    Feb 2009
    Posts
    34

    Default

    I changed DVI-D_1 to DVD-D 1 after looking at comments in the git source.

    I retested DVI-D_1 and all.

    The resolution changes from 1360x768 to 720p (i.e. 1280x720) and the task bars are pushed off the viewing area with just about 10% showing. No change in audio results.
    Last edited by Blue Beard; 05-06-2009 at 11:18 PM.

  4. #4
    Join Date
    Jul 2008
    Posts
    208

    Default

    Did you ever get this resolved? It's kind of an interesting problem.

    For me with an integrated hdmi, the hdmi output is 1,3. Using current git of radeonhd
    In xorg.conf I only have the following:
    Code:
    	Driver "radeonhd"
    	Option "HDMI" "all"
    I'm not sure which 3450 you have but assuming it is a separate video card and you've routed a cable from the rear speaker output to the video card input, I would think you would want the PC to output digital audio out, which is probably 0,1 (card 0 device 1). Then the video driver, radeonhd, with the hdmi option should allow it to be sent over the video line. But, as I don't have your hardware I'm only guessing.

    What does aplay -l show?
    What is make and model of your 3450?

  5. #5
    Join Date
    Feb 2009
    Posts
    34

    Default HD3450 HDMI Audio

    I updated radeonhd to the latest HDMI audio update for RS690.

    I tested this update with both an PowerColor HD3450 and a RS690 on a Sapphire PE-AM2RS690HD motherboard. Both failed.
    I do not know what the cause of this problem is and it is definitely compounded by the current pulseaudio problems in Ubuntu 9.04 and the latest karmic. I am getting better results with alsa 1.0.20 and pulseaudio 9.15.

    To resolve my problem with this card, I switched to Catalyst 9.5 on Windows 7 rc1. I also tested Catalyst 9.5 on karmic but could not get it to work.
    Last edited by Blue Beard; 06-04-2009 at 10:51 PM.

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