[mythtv-users] alsa 1.0.24, 0.24.2-fixes, ubuntu lucid, hdmi audio, AC3/DTS not working
jyavenard at gmail.com
Tue Feb 21 05:33:39 UTC 2012
On 21 February 2012 15:31, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> ok, for some reason internal volume control became enabled ("reenc 1")
> with the PCM audio volume set to 0 (I've never had this enabled or
> changed the volumes), which was forcing myth to reencode the ac3 and I
> think that is what was causing the receiver to not be able to
> recognize the other channels for whatever reason, even when it said it
> was sending 6ch ac3.
0.25 actually read the ELD data of your device to find out if it can
really do 6 channels PCM..
If you post the ELD data I indicated earlier, I will be able to tell
you what your amplifier can do..
If it can't do more than stereo PCM, you will need to check in the
advanced settings the StereoPCM flag. That way even with software
volume enabled, you will be able to enjoy surround playback
> once I noticed that (I normally just keep hitting next and don't look
> at it) and disabled it, it worked right away for everything
> (recordings, videos, and mythmusic including 24bit 88.2Khz music).
> i guess there's some odd code in there that resets the output channels
> and this internal volume control without the user doing it, hopefully
> that's fixed for 0.25
There's nothing to fix there... the settings screen gets adjusted
according to the audio device you have set.
So say you are on ALSA:iec958 and you move to ALSA:front which is stereo only
The speaker config will change to stereo. if you do move back to
iec958 instead, it will not go back to 5.1
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