Re: MCP78 no HDMI audio

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Thanks a lot,

i had similar problems with my acer 5920g notebook and the only problem 
was that i just upgraded alsa-base but not alsa utils

greetings,

Marco Gusy wrote:
> First let's make things clear ;-)
> I manage to make hdmi audio work. This happened at 1:30 a.m., with 
> my avreceiver booming kde opening session sound at thunderstorm-like 
> volume for the happines of my neighbours XD
>
> I didn't pay enough attention to you user classification, but if you want to 
> place me somewhere I tell what I did, I post here some history because it 
> will be useful to others
>
> 2.6.29.1 kernel isn't supported by many software in stable release I need 
> (i.e. Lirc). This is, in my opinion, why gentoo still marked 2.6.27 as latest 
> stable.
>
> -First thing I did is compiling 2.6.27 kernel with its alsa version. Analog 
> audio was detected, hdmi was not.
>
> -I recompiled kernel without alsa, and built externally alsa 1.0.19. I 
> wrongly used the old alsa utils, so HDMI were not recognized by alsaconf.
>
> -i switched to 2.6.29.1 (which ships alsa 1.0.18a)  and upgraded alsa 
> utils to 1.0.19. Hdmi was detected by alsaconf, but still didn't play 
> anything from virtual console. I also found out lirc could not compile. I 
> decided to ask help on this list, and meanwhile concentrate on lirc and 
> mythtv.
>
> -i came back to 2.6.27, used alsa 1.0.19 with new alsa utils. Hdmi were 
> recognized. Installed lirc, kde, mythtv and other good software.
>
> -i booted for some reason to 2.6.29.1 and when kde started BOOM!
>
> +-+-++-+-+-Short epilogue+-+-+-+--+-+-+-+-
>
> Hdmi works on 2.6.29.1 with alsa 1.0.18a.
> Hdmi DOESN'T work on 2.6.27 with alsa 1.0.19.
> I suspect (can't bet anyway) nvidia driver for X unlocks hdmi audio on my 
> mother board. This because in bios settings under HDMI audio I only have 
> "Disabled" and "AUTO" (there is no "Enabled"  -_- )
>
> This is my WORKING setup:
>
> marco@minibox ~ $ cat /proc/asound/version
> Advanced Linux Sound Architecture Driver Version 1.0.18a.
>
> marco@minibox ~ $ uname -r
> 2.6.29.1
>
> marco@minibox ~ $ cat /etc/asound.conf
> pcm.!default hdmi:NVidia
> pcm.iec958 hdmi:NVidia
>
> marco@minibox ~ $ aplay -L
> hdmi:CARD=NVidia
>     HDA NVidia, NVIDIA HDMI
>     HDMI Audio Output
> null
>     Discard all samples (playback) or generate zero samples (capture)
>
> marco@minibox ~ $ ls /proc/asound/card0/
> codec#3  id  pcm3p
>
>
>
>
>
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