NVIDIA ION MCP79 HDMI no sound

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Hi,

I have a gentoo system. 2.6.35 kernel. The machine is a ZOTAC board. Until now, the only way to get sound working over hdmi was to use GIT alsa-drivers. Since today this doesnt work anymore, I only have some kind of periodical clicking from the TV speakers, when trying to play some content. 
Any Ideas?


cat /home/user/.asoundrc 
pcm.!default {
       type plug
            slave.pcm "hdmi"
      }


cat /proc/asound/cards 
 0 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfae78000 irq 22

cat /proc/asound/card0/codec#3            
Codec: Nvidia MCP79/7A HDMI

lsmod
Module                  Size  Used by
snd_seq                32247  0 
snd_seq_device          3627  1 snd_seq
uinput                  5103  0 
coretemp                4546  0 
nvidia              10194733  28 
hid_apple               3926  0 
snd_hda_codec_nvhdmi    10310  1 
usbhid                 28829  0 
snd_hda_intel          15765  0 
snd_hda_codec          53363  2 snd_hda_codec_nvhdmi,snd_hda_intel
ehci_hcd               38704  0 
snd_hwdep               3320  1 snd_hda_codec
snd_pcm                42065  2 snd_hda_intel,snd_hda_codec
ath9k                  59238  0 
snd_timer              11240  2 snd_seq,snd_pcm
ath9k_common            4336  1 ath9k
ath9k_hw              260260  2 ath9k,ath9k_common
forcedeth              41715  0 
usbcore               119752  3 usbhid,ehci_hcd
snd                    29437  8 snd_seq,snd_seq_device,snd_hda_codec_nvhdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
snd_page_alloc          4915  2 snd_hda_intel,snd_pcm







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