Belgarth:
With ALSA everything is possible :)
The hdmi device that is defined by default in the newer alsa revs
doesn't seem to fix the number of channels or the sample rate. Here is
an asound.config that I posted several months ago on the ubuntu forums.
This config defines a virtual device that wraps the hardware, then adds
channel and rate correction, then adds volume control, then sets that as
the default for the system. Works in all the apps I've tried (flash in
firefox included):
# Jon B's ASound.Conf file for HDMI Audio on MythTV
# HDMI configuration with volume control for MythTV
# For ALSA 1.0.19 - 1/31/2009
# Instructions for use
# 1) Find your hmdi hardware Card Number and Device Number. Open a terminal
and do:
# aplay -L
# That will list all of the hardware audio devices. Look for the one
labeled HDMI.
# Note what Card Number and Device Number it lists (they seem to be card 0,
# device 3 but your system may be different).
# 2) Edit the pcm.hdmi_hw device defined here to set your Card Number and
Device Number.
# 3) Put this file in either /etc/asound.conf or in your home directory as
.asoundrc.
# sudo cp deweys_asound.conf.txt /etc/asound.conf
# or
# sudo cp deweys_asound.conf.txt $HOME/.asound.conf
# 4) Exit mythfrontend. Then restart the sound system:
# sudo /etc/init.d/alsa-utils restart
# 5) Start mythfrontend and go to the audio setup screen
# "Utilities / Setup" then "Setup" then "General" then "Next" until you
# get to the Audio tab.
# 6) Fill in the info - it's case sensitive:
# Audio output device: ALSA:hdmi_complete <--- note you have to type in
this field
# Passthrough output devide: Default
# ... Stereo... ... Passive...
# Mixer Device: ALSA:default
# Mixer controls: hdmi_volume <--- type in this field
# 7) Work your way back to Watch TV and give it a try.
pcm.hdmi_hw {
type hw
card 0 # <----- Put your card number here
device 3 # <----- Put your device number here
}
pcm.hdmi_formatted {
type plug
slave {
pcm hdmi_hw
rate 48000
channels 2
}
}
pcm.hdmi_complete {
type softvol
slave.pcm hdmi_formatted
control.name hdmi_volume
control.card 0
}
pcm.!default hdmi_complete
--
No HDMI audio with ALC883 chipset
https://bugs.launchpad.net/bugs/148097
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