[mythtv-users] alsa 1.0.24, 0.24.2-fixes, ubuntu lucid, hdmi audio, AC3/DTS not working
Pieter De Wit
pieter at insync.za.net
Tue Feb 21 18:56:40 UTC 2012
Hi,
So I sneaked in an Upgrade to "Ubuntu 12.04" (Thanks to the cats that woke
me up at 02:30...awesome). There hasn't been a hard reset of the PC since,
but the output has hardly changed (if any) :
# cat /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] 32000 44100 48000 96000 176400
sad0_bits [0xe0000] 16 20 24
sad1_coding_type [0x1] LPCM
sad1_channels 8
sad1_rates [0x6e0] 32000 44100 48000 96000 176400
sad1_bits [0xe0000] 16 20 24
sad2_coding_type [0x2] AC-3
sad2_channels 6
sad2_rates [0xe0] 32000 44100 48000
sad2_max_bitrate 640000
sad3_coding_type [0x7] DTS
sad3_channels 6
sad3_rates [0xe0] 32000 44100 48000
sad3_max_bitrate 1536000
I can get all the options on "Card 8", but then I get no sound. I am
wondering however if it has to do with the fact that I am using a TV card
and not video. What I mean is that the sound might work if I play a video,
not Live TV.
I will investigate a bit more tonight. The current packages stand at:
ii alsa-base 1.0.25+dfsg-0ubuntu1
ALSA driver configuration files
ii alsa-utils 1.0.25-1ubuntu1
Utilities for configuring and using ALSA
ii linux-image-3.2.0-17-generic 3.2.0-17.26
Linux kernel image for version 3.2.0 on 64 bit x86 SMP
ii mythtv-backend
2:0.25.0~master.20120216.769dfae-0ubuntu1 A personal video recorder
application (server)
ii mythtv-backend-master
2:0.25.0~master.20120216.769dfae-0ubuntu1 Metapackage to setup and
configure a "Master Backend" profile of MythTV.
ii mythtv-common
2:0.25.0~master.20120216.769dfae-0ubuntu1 A personal video recorder
application (common data)
ii mythtv-database
2:0.25.0~master.20120216.769dfae-0ubuntu1 A personal video recorder
application (database)
ii mythtv-frontend
2:0.25.0~master.20120216.769dfae-0ubuntu1 A personal video recorder
application (client)
Cheers,
Pieter
On Tue, 21 Feb 2012, Jean-Yves Avenard wrote:
> Hi
>
> On 21 February 2012 17:21, Pieter De Wit <pieter at insync.za.net> wrote:
>
>> 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
>
> interesting that they have put two LPCM sad in there..
>
>> 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 ?
>
> Yes.
> refer to http://www.mythtv.org/wiki/User_Manual:HDAudioPassthrough
>
> you do not need a kernel upgrade , just an alsa upgrade (1.0.24 for HD
> audio passthrough)
>
> For being able to get myth to properly read the capabilities of your
> device, you need ALSA 1.0.25 (Warning , get it from git, do not use
> the 1.0.25 archive on alsa web site; it's broken for nvidia audio)
>
> It would be of some help if you actually upgraded now to Myth 0.25 and
> provide some testing feedback
>
> JY
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