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Old 05-07-11, 06:06 PM   #1
Mark Kendall
Registered User
Join Date: May 2011
Posts: 3
Default Zotac ION (MCP79) HDMI audio works on LCD monitor but not on LCD TV

I posted the following to an ubuntu forum a couple of days ago but think it may be more appropriate here.

I've got at Zotac ION (ION-A or similar with MCP79/7A) and have a problem getting HDMI audio working through my TV. It briefly worked a few years ago (Ubuntu 8 something I think) and now after upgrading to Natty I've gone through a bit of an effort to try and get it going again.

I've read and spent a LOT of time altering configuration files, un-muting devices, attempting different modprobe options seen in forums etc. To check if the TV might have developed a problem I recently plugged in a LCD monitor which has a stereo speaker out and attached speakers to it and without even rebooting the sound worked (using a aplay command like aplay -D plughw:0,3 /usr/share/sounds/alsa/Front_Left.wav)

I also borrowed a Windows7 laptop and plugged this into my TV and the sound worked so it seems it just the combination of my computer and TV that's causing the problem.

I have just recently seen the following posts and am wondering whether I may be suffering from the same problem which has not been fixed?

Here's some output that may be of interest
cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.23.
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
ls /proc/asound/card0
codec#0  codec#3  id  pcm0c  pcm0p  pcm1p  pcm3p
uname -a
Linux lounge 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
/etc/asound.conf is currently empty.

extract from /etc/X11/xorg.conf
Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "KTV LTW32DV6"
    HorizSync       31.0 - 61.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "ION"

Section "Screen"

# Removed Option "TwinViewXineramaInfoOrder" "CRT-0"
# Removed Option "TwinView" "1"
# Removed Option "metamodes" "CRT: 1360x768 +0+0, DFP: nvidia-auto-select +0+0"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "TwinViewXineramaInfoOrder" "DFP-1"
    Option         "metamodes" "1360x768_60_0 +0+0; nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
Does anyone have any advice on what I can try next to get the computer and TV to work together?
Attached Files
File Type: gz nvidia-bug-report.log.gz (65.9 KB, 94 views)

Last edited by Mark Kendall; 05-07-11 at 06:10 PM. Reason: Attaching bug report log
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