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Home › OLED TVs

OLED C9 - EDID / limitation regarding HDMI-eARC pass-through

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Answers

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  • ▲ 10 ▼
    dfa973dfa973 Member
    October 29, 2019, 6:30 am
    @PeterFolst
    No lossless HD audio via internal apps. Maybe LG will upgrade the support for HD audio in the future...
    See details here.
    PeterFolstmrhollywood360
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  • ▲ 0 ▼
    PeterFolstPeterFolst Member
    October 29, 2019, 6:11 am
    Well there’s a difference between pass-through via HDMI, so in case you have a Blu-ray player connected to the TV directly and play a file with DTS-HD or TrueHD , then it should work. 

    But what I am asking, which is not clear to me yet, and has also been an issue with other TVs is the pass through of audio from TV to AV-Receiver. For example in the case if you install the Plex tv app on TV and access your NAS via this app. Will the played file, let’s say 4K Movie with lossless audio (dts-he or truehd) be played properly? So that I have a 4K picture and sound is forwarded through eARC to my AVR and output on my loudspeakers. 

    That’s the main question. 

    Nvidia shield is again a 3rd party player, which I want to disregard in this case. 
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  • ▲ 0 ▼
    fenster3000fenster3000 Member
    October 28, 2019, 9:41 pm
    DTS HD MSTR and True HD (including the lossy formarts) will passthrough just fine with your AVR/TV/Shield combination.

    Only 5.1/7.1 LPCM will be an issue until Q2 2020.
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  • ▲ 0 ▼
    Fringe09Fringe09 Member
    October 28, 2019, 6:32 pm
    I'm picking up the new NVIDIA Shield Pro today which support pass-through of DTS-HD MA, TrueHD, and many other audio formats.

    The Shield will connect to the TV. TV is connected to the Denon AVR-X3600H which supports eARC.

    I'll be using Plex to play various MKV files. I am hoping all those audio formats pass-through without any hiccups.
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  • ▲ 0 ▼
    fenster3000fenster3000 Member
    October 28, 2019, 6:15 pm
    Yea. But this must be an issue with the app.
    Not with eARC in general.

    If you connect a Blu-RayPlayer to the C9 it will passthrough DTS HD MSTR and True HD just fine.

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  • ▲ 0 ▼
    mrhollywood360mrhollywood360 Member
    October 28, 2019, 12:54 pm
    @PeterFolst I'm currently using the emby app on a C9 (with a Jellyfin server), and currently there are a few issues. For one DTS-HD is supported, but the TV will downsample it to standard DTS. TrueHD is not supported at all, so the server will transcode to AC3. Multichannel PCM streams will play, but the C9 can't send this over eARC so it just plays stereo (hopefully this will be fixed with update). On a side note dolby vision rips play just fine, so that's nice.
    It may be worth opening a separate thread on these issues, because hardware wise I don't see any reason why it can't support DTS-HD or TrueHD since it now has eARC.
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  • ▲ 0 ▼
    PeterFolstPeterFolst Member
    October 27, 2019, 8:03 pm
    @fenster3000 Does that mean, if I use LGs internal media player and stream file from my NAS Storage that includes DTS HD MSTR or TrueHD, it will forward it via eARC to my AV Receiver and play it?

    For example, I was thinking of installing Plex tv app on LG and playing the files with DTS HD MSTR and forwarding the audio to my receiver and outputting it on my loudspeakers.
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  • ▲ 0 ▼
    fenster3000fenster3000 Member
    October 27, 2019, 11:30 am edited October 2019
    eARC is already working since Day 1.
    Only Multi-Channel PCM is not supported just yet. 

    DTS HD MSTR and True HD are working just fine.

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  • ▲ 5 ▼
    GuyinMileHighGuyinMileHigh Member
    October 26, 2019, 6:34 pm
    They should not be selling eARC on their latest OLED Tvs if it is still in development. Q2 2020? Seriously LG??? That is 8 months away. Total nonsense scam!
    RussellH
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  • ▲ 5 ▼
    fenster3000fenster3000 Member
    October 23, 2019, 9:39 am edited October 2019
    They have been.
    Long time ago.

    In the end the only thing that matters is this:
    LG listened to their customers. While a bit more communication over the last few month would have been appreciated they made the right choice. I am pretty sure that a lot of other big companies are not that "open" to requests from their customers.


    mrhollywood360
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  • ▲ 5 ▼
    kidicaruskidicarus Member
    October 23, 2019, 12:19 am
    Wow, finally an answer - but up to 6 months wait is ridiculous. They must be waiting on a dependency of some sort. Does anyone know if the specifications foe eARC have been fully ratified ?
    GuyinMileHigh
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  • ▲ 5 ▼
    UdoGUdoG Member
    October 22, 2019, 9:22 pm
    Sorry, I pressed the YES button (Did this answer the question) - due to this, the answer was moved to the first page.
    Maybe it's better - otherwise the answer will lost in this thread.
    fenster3000
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  • ▲ 5 ▼
    mrhollywood360mrhollywood360 Member
    October 22, 2019, 8:33 pm
    @fenster3000 check the first page
    fenster3000
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  • ▲ 0 ▼
    DJ_GLiTCHDJ_GLiTCH Member
    October 22, 2019, 8:02 pm
    @fenster3000 - Wouldn't be surprised if they deleted that comment and claimed it never existed at this point haha. Whilst I'm happy that this is getting rectified, to get this feature in Q2 2020 seems a little ridiculous seeing as it could have been included rather easily from the very beginning... Glad it's coming though, don't get me wrong.
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  • ▲ 10 ▼
    fenster3000fenster3000 Member
    October 22, 2019, 7:14 pm edited October 2019
    Am I blind or is Jamals answer gone? :D 

    For those who are too late, this was his reply:
    "Good Morning,

    LG will be introducing PCM Multi-channel support when using eARC in the 2 quarter of 2020. This will be possible via a software update for 2019 & 2020 TV that support eARC."

    Still visible in his profile:



    €: His post can be found here. He moved it to page 1:
    https://lgcommunity.us.com/discussion/4423/oled-c9-edid-limitation-regarding-hdmi-earc-pass-through/p1
    mrhollywood360dfa973
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  • ▲ -5 ▼
    UdoGUdoG Member
    October 22, 2019, 7:00 pm edited October 2019
    @JamalofLG - sounds good - thank you for your support!
    With PCM Multi-channel support via eARC and GSYNC you provided a great solution for gamers!
    GuyinMileHigh
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  • ▲ -5 ▼
    mrhollywood360mrhollywood360 Member
    October 22, 2019, 5:22 pm
    @JamalofLG Thank you for the reply. Glad to here this issue is getting fixed!
    GuyinMileHigh
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  • ▲ 0 ▼
    fenster3000fenster3000 Member
    October 22, 2019, 3:00 pm edited October 2019
    Thanks for the answer and the work you did behind the scenes @JamalofLG.


    Also thanks @everyone who commented in this thread/signed the petition etc..
    Special thanks to @UdoG for creating this thread and to @mrhollywood360 for creating the petition.


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  • ▲ 5 ▼
    fenster3000fenster3000 Member
    October 22, 2019, 2:38 pm
    231 and still going strong:
    https://www.change.org/p/lg-electronics-lg-oled-c9-multichannel-pcm-over-earc
    mrhollywood360
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  • ▲ 15 ▼
    ThisGameThisGame Member
    October 22, 2019, 7:05 am
    Well, they seem to be happy selling broken stuff to the majority of customers, so it looks for now I'm not going to be one of them. If Panasonic and Philips have 2.1 next year, my cash is going towards them.
    mrhollywood360fenster3000GuyinMileHigh
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  • ▲ 0 ▼
    DJ_GLiTCHDJ_GLiTCH Member
    October 22, 2019, 1:23 am edited October 2019
    Posting this here for those who are impacted by the EDID LPCM limitation and Dolby audio delay/lag issues:

    I just received an "update" from LG about the Dolby audio delay/lag issue (6 months in), and they claim that this is caused by an "incompatibility between products that use eARC and ARC"... Despite this being completely incorrect, it amazes me that they're willing to say this and then turn around and recommend we buy both their TV and soundbar for complete compatibility (with the soundbar only supporting ARC).

    To say I'm unimpressed with LG and their support would be a total understatement. We've already identified the issue and cause, all LG has to do is provide a fix for it - making up excuses as to why it doesn't work and then continue to ignore the problem isn't getting anybody anywhere.
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  • ▲ 10 ▼
    kidicaruskidicarus Member
    October 21, 2019, 11:06 pm
    Following fenster3000's advice, and i just logged 2 support enquiries regarding this issue - One on LG USA website and one on LG Australia. 

    "Until we get a confirmation that this update will fix this issue make sure to send them tickets. This is even more important than signing the petition because a petition can be "overlooked". >100 customers that are sending tickets can not."
    fenster3000mrhollywood360
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  • ▲ 5 ▼
    mrhollywood360mrhollywood360 Member
    October 21, 2019, 2:26 pm
    Still no confirmation yet as too whether or not the update for fixing eARC will come to the C9 too. The lack of any/inconsistent responses is ridiculous.   
    fenster3000
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  • ▲ 5 ▼
    fenster3000fenster3000 Member
    October 14, 2019, 5:15 pm edited October 2019
    @idgforum DTS HD MSTR never was an issue.
    Same goes for True HD.

    Only 5.1/7.1 PCM is messed up.


    idgforum
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  • ▲ 0 ▼
    lorslors Member
    October 14, 2019, 3:56 pm edited October 2019
    @mrhollywood360 not myself:

    https://www.avsforum.com/forum/40-oled-technology-flat-panels-general/3075344-official-2019-lg-c9-consolidated-info-faq-troubleshooting-firmware-more-4.html#post58683126

    But this guy is using some other device for getting 5.1, damn it...why all brands have at least one major issue which just ruins it.
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  • ▲ 0 ▼
    idgforumidgforum Member
    October 14, 2019, 3:50 pm edited October 2019
    I can get 5.1 lossless DTS to work on eARC with my Samsung HW-K 96R in KODI on PC. Not only 2.0. Test for your self, here the link to download and password soundtest Right click and download: https://1drv.ms/u/s!Am0WJWrdVnTDk-cQ2NBPYd2ZnjCSYw?e=jp9Nq6
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  • ▲ 0 ▼
    mrhollywood360mrhollywood360 Member
    October 14, 2019, 2:27 pm
    @lors have you gotten this working? I've used other ways of forcing 5.1 on PC and it has not worked.
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  • ▲ 0 ▼
    lorslors Member
    October 13, 2019, 8:52 pm edited October 2019
    It should work on PC without HDfury if you just edit the settings with CRU. 
    https://www.avsforum.com/forum/40-oled-technology-flat-panels-general/3075344-official-2019-lg-c9-consolidated-info-faq-troubleshooting-firmware-more-4.html#post58683126
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  • ▲ 0 ▼
    fenster3000fenster3000 Member
    October 13, 2019, 12:12 pm edited October 2019
    According to this thread...:
    https://www.avsforum.com/forum/40-oled-technology-flat-panels-general/3075344-official-2019-lg-c9-consolidated-info-faq-troubleshooting-firmware-more.html#post58227636

    ... 5.1 LPCM passthrough with an HDFury DIVA inserted between the LG C9 and an AVR works. I do not know if it works with 7.1 as well?

    Nevertheless a device like that should not be required to get 5.1/7.1 PCM working...
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