Comment 0 for bug 389494

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

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 propriatary geforce driver (NVIDIA-Linux-x86_64-185.18.14-pkg2.run) seem to work properly, there was no HDMI sound. Thus, I updates 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.

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:~$