No audio via HDMI on HD3450

[Blue Beard]

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:

# 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?

[Zajec]

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

[Blue Beard]

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.

[forum1793]

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:
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?

[Blue Beard]

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.