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[jhoechtl <johann.hoechtl@xxxxxxxxx>]

Ok, it's 2013, I have that driver and no sound via HDMI. Wow, that is
frustrating!

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https://bugs.launchpad.net/bugs/389494

Title:
  No HDMI Sound with Jaunty 9.04, Kernel 2.6.30, ALSA 1.0.20, Conexant
  CX20561 & nvidia MCP65 HD Audio (Geforce 8400M GS)

Status in “alsa-driver” package in Ubuntu:
  Fix Released
Status in “linux” package in Ubuntu:
  Fix Released
Status in “alsa-driver” package in Arch Linux:
  New

Bug description:
  I did a fresh install of jaunty on my HP DV9812EG Notebook, but HDMI
  Audio out isn't working.

  In the beginning i had ALSA Version 1.0.18 installed, which came with
  Ubuntu 9.04. Even tough the lastest proprietary geforce driver
  (NVIDIA-Linux-x86_64-185.18.14-pkg2.run) seems to work properly, there
  was no HDMI sound. Thus, I updated to the lastest Kernel 2.6.30
  (official release, no RC) and ALSA 1.0.20, but it didn't change
  anything. The HDMI "device" can't be recognized even tough it should
  be there.

  ALSA 1.0.20 was configured with the following command:

  ./configure --with-cards=all --with-card-options=all --with-
  sequencer=yes && make

  Under Windows Vista Everest finds the following soundcard and HD Audio
  Modem:

  Conexant Cx20561 @ nVIDIA MCP65 - High Definition Audio Controller
  Modem HDAUDIO Soft Data Fax Modem with SmartCP

  "hwinfo --short" under ubuntu 9.04 confirms this, but "aplay -l" list
  only these two audio devices (it should be three at least):

  rennie@Riese:~$ aplay -l
  **** Liste von PLAYBACK Geräten ****
  Karte 0: NVidia [HDA NVidia], Gerät 0: CONEXANT Analog [CONEXANT Analog]
    Untergeordnete Geräte: 1/1
    Untergeordnetes Gerät '0: subdevice #0
  Karte 0: NVidia [HDA NVidia], Gerät 1: Conexant Digital [Conexant Digital]
    Untergeordnete Geräte: 1/1
    Untergeordnetes Gerät '0: subdevice #0
  rennie@Riese:~$

  So what's missing is something like this:

  Karte 0: NVidia [HDA NVidia], Gerät 3: NVIDIA HDMI [NVIDIA HDMI]
    Untergeordnete Geräte: 1/1
    Untergeordnetes Gerät '0: subdevice #0

  "aplay -L" shows this result:

  rennie@Riese:~$ aplay -L
  default:CARD=NVidia
      HDA NVidia, CONEXANT Analog
      Default Audio Device
  front:CARD=NVidia,DEV=0
      HDA NVidia, CONEXANT Analog
      Front speakers
  surround40:CARD=NVidia,DEV=0
      HDA NVidia, CONEXANT Analog
      4.0 Surround output to Front and Rear speakers
  surround41:CARD=NVidia,DEV=0
      HDA NVidia, CONEXANT Analog
      4.1 Surround output to Front, Rear and Subwoofer speakers
  surround50:CARD=NVidia,DEV=0
      HDA NVidia, CONEXANT Analog
      5.0 Surround output to Front, Center and Rear speakers
  surround51:CARD=NVidia,DEV=0
      HDA NVidia, CONEXANT Analog
      5.1 Surround output to Front, Center, Rear and Subwoofer speakers
  surround71:CARD=NVidia,DEV=0
      HDA NVidia, CONEXANT Analog
      7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
  iec958:CARD=NVidia,DEV=0
      HDA NVidia, Conexant Digital
      IEC958 (S/PDIF) Digital Audio Output
  null
      Discard all samples (playback) or generate zero samples (capture)
  rennie@Riese:~$ 

  So again there is missing something like:

  hdmi:CARD=NVidia,DEV=0
      HDA NVidia, NVIDIA HDMI
      HDMI Audio Output

  I even tried to go back to ALSA 1.0.19 but it is not possible to
  ./configure the original alsa-driver package (there was an error, but
  i don't remember which). As an alternative i tried to install the
  linuxant deb-version of ALSA (alsa-driver-linuxant_1.0.20.3_all.deb)
  and  the realtek version (realtek-linux-audiopack-5.11) but both
  versions didn't work.

  So this must be a bug, because everything else works fine (e.g. HDMI
  Video out, Laptop Speakers, Ear-Plug-Audio out...)

  Unfortunately, to find and eliminate the bug, I can contribute only
  with some other information:

  Result of "lspci | grep -i audio!":
  ---------------------------------------------------

  rennie@Riese:~$ lspci | grep -i audio
  00:07.0 Audio device: nVidia Corporation MCP65 High Definition Audio (rev a1)

  ...and the result of "cat /proc/asound/cards"

  rennie@Riese:~$ cat /proc/asound/cards
   0 [NVidia         ]: HDA-Intel - HDA NVidia
                        HDA NVidia at 0xf2480000 irq 21
  rennie@Riese:~$ 

  Result of "alsactl init NVidia":
  ------------------------------------------------

  rennie@Riese:~$ alsactl init NVidia
  Unknown hardware: "HDA-Intel" "Conexant CX20561 (Hermosa)" "HDA:14f15051,103c30cf,00100000" "0x103c" "0x30cf"
  Hardware is initialized using a guess method
  /usr/share/alsa/init/default:51: control element not found
  /usr/share/alsa/init/default:52: missing closing brace for format
  /usr/share/alsa/init/default:52: error parsing CTL attribute
  /usr/share/alsa/init/default:52: invalid rule
  rennie@Riese:~$

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