[mythtv-users] alsa 1.0.24, 0.24.2-fixes, ubuntu lucid, hdmi audio, AC3/DTS not working

[Pieter De Wit]

> 0.25 actually read the ELD data of your device to find out if it can
> really do 6 channels PCM..
>
> If you post the ELD data I indicated earlier, I will be able to tell
> you what your amplifier can do..
>
> If it can't do more than stereo PCM, you will need to check in the
> advanced settings the StereoPCM flag. That way even with software
> volume enabled, you will be able to enjoy surround playback
>
Thread hijack ! :)

I have a Nvidia GT430 (iirc, might be the 440) connected to a Samsung HT 
6750W via HDMI:

HT 6750W Tech spec:
http://www.samsung.com/nz/consumer/tv-audio-video/home-theatre/home-theatre-systems/HT-D6750W/XY-spec

lspci:
01:00.0 VGA compatible controller: nVidia Corporation Device 1245 (rev 
a1) (prog-if 00 [VGA controller])
         Subsystem: LeadTek Research Inc. Device 2728
         Flags: bus master, fast devsel, latency 0, IRQ 16
         Memory at fa000000 (32-bit, non-prefetchable) [size=32M]
         Memory at d0000000 (64-bit, prefetchable) [size=128M]
         Memory at d8000000 (64-bit, prefetchable) [size=64M]
         I/O ports at ac00 [size=128]
         [virtual] Expansion ROM at fc000000 [disabled] [size=512K]
         Capabilities: [60] Power Management version 3
         Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
         Capabilities: [78] Express Endpoint, MSI 00
         Capabilities: [b4] Vendor Specific Information: Len=14 <?>
         Capabilities: [100] Virtual Channel
         Capabilities: [128] Power Budgeting <?>
         Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 
Len=024 <?>
         Kernel driver in use: nvidia
         Kernel modules: nvidia_current_updates, nvidia_current, 
nouveau, nvidiafb

01:00.1 Audio device: nVidia Corporation Device 0bee (rev a1)
         Subsystem: LeadTek Research Inc. Device 2728
         Flags: bus master, fast devsel, latency 0, IRQ 17
         Memory at fc080000 (32-bit, non-prefetchable) [size=16K]
         Capabilities: [60] Power Management version 3
         Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
         Capabilities: [78] Express Endpoint, MSI 00
         Kernel driver in use: HDA Intel
         Kernel modules: snd-hda-intel

==> /proc/asound/card0/eld#0.0 <==
monitor_present         0
eld_valid               0

==> /proc/asound/card0/eld#1.0 <==
monitor_present         1
eld_valid               1
monitor_name            SAMSUNG

connection_type         HDMI
eld_version             [0x2] CEA-861D or below
edid_version            [0x3] CEA-861-B, C or D
manufacture_id          0x2d4c
product_id              0x4fb
port_id                 0x20000
support_hdcp            0
support_ai              0
audio_sync_delay        0
speakers                [0x4f] FL/FR LFE FC RL/RR RLC/RRC
sad_count               4
sad0_coding_type        [0x1] LPCM
sad0_channels           2
sad0_rates              [0x6e0] 44100 48000 88200 176400 192000
sad0_bits               [0xe0000] 16 20 24
sad1_coding_type        [0x1] LPCM
sad1_channels           8
sad1_rates              [0x6e0] 44100 48000 88200 176400 192000
sad1_bits               [0xe0000] 16 20 24
sad2_coding_type        [0x2] AC-3
sad2_channels           6
sad2_rates              [0xe0] 44100 48000 88200
sad2_max_bitrate        640000
sad3_coding_type        [0x7] DTS
sad3_channels           6
sad3_rates              [0xe0] 44100 48000 88200
sad3_max_bitrate        1536000

==> /proc/asound/card0/eld#2.0 <==
monitor_present         0
eld_valid               0

==> /proc/asound/card0/eld#3.0 <==
monitor_present         0
eld_valid               0

This is a stock install on Ubuntu 11.10,mythtv 
2:0.24.0+fixes.20110908.1de0431-0ubuntu1

My question is, with 0.25 and a later kernel, will I get TrueHD audio or 
DTS-HD, or any of the other modes listed on the Website ?

Cheers,

Pieter