@gquiring When using the internal player, the TV will transcode DTS-HD to DTS on-the-fly. There's no way around this. Not sure about the PC. Are you sure it's passing through a bitstream signal instead of PCM? Can you verify it's using a DTS-HD stream and not a DTS stream? Does TrueHD work in your setup?
Same issue here, LG 65 C9-PLA + DENON 6400H and receiving 2 chanels from the eARC conection... I have read LG is going to fix it during second cuater 2020... must it take that long!? The HDMI 2.1 sounds great on the specifications but is not working!
Quick question for those that may know .. I recently got an LG 65" C9.
I have a few year old Pioneer VSX-8231 ARC (not eARC) capable receiver. I hooked it up thru the eARC HDMI, & I notice that the sound from "some" (not all), sources, such as the TV's built in Netflix & Amazon apps, and a connected Roku, just "buzz", and don't seem to pass the audio, unless I switch the TV's audio setting to PCM, & then only get 2 channel, not 5.1 ... ** Is this the problem mentioned that a 2ndQ 2020 firmware update will "fix" ??? I have hooked up an optical cable as a workaround for now....
Want to add my voice here. User of a Denon AVR-X4400H. eARC is not working correctly when connected to the C9. It is only passing broken stereo and does not pass through proper multichannel audio. I believe that the problem is on the Denon end, however maybe LG can chime in and help. Newer Denon AVRs work fine.
Hi, I also have this problem with the C9, and with Denon AVR-X4400H. The ARC does not work well, and worse the eARC. Only audio on 2 front L and R channels, but in Denon all channels on display are activated.
I have contacted Denon and they tell me, which is LG's problem. And that they are the ones who have to solve the problem.
I feel translation from Google. I am Spanish and I do not speak English.
@axnxa - it's definitely not an LG problem, at least not alone. Only the 2017 lineup of Denon and Maranz receivers have this problem. These are the only series that did not ship with eARC and instead had a firmware update issued to add it. Obviously something is buggy in the FW.
dejanh: Hello, Denon does not think the same, I leave Denon's answer to my question:
"Dear Sir:
We are very sorry for the problem you have with your LG TV and your DENON AVR X4400 receiver and in relation to it we confirm that DENON does not recognize the problem as yours and that LG does recognize having a problem with the eARC function, so much so, which announced its intention to solve it in future firmware updates, specifically as of April 1, 2020, and that both brands already maintain contact in order to remedy the situation.
However we remain at your disposal for any questions, or needs you may have and we greet you attentively.
Customer Service Department
Gaplasa, S. A. "
I have translated into English with Google, I'm sorry.
I put the original in Spanish:
"Estimado señor:
Lamentamos mucho la problemática que tiene planteada con su TV LG y su receptor DENON AVR X4400 y con relación a la misma le confirmamos que DENON no reconoce el problema como suyo y que LG sí reconoce tener un problema con la función eARC, tanto es así, que anunció su intención de solucionarlo en próximas actualizaciones de firmware, concretamente a partir del 1 de Abril de 2020, y que ambas marcas ya mantienen contacto a fin de subsanar la situación.
No obstante quedamos a su disposición para cualquier duda, ó necesidad que pueda tener y le saludamos atentamente.
Yeah, an April fools joke is what we will get on April 1st, 2020. Denon certainly has a part to play. They're just washing their hands of the responsibility completely.
Great picture, quirky sound and a promise to fix eARC 4 months later. Same line I received from Samsung with their q90 soundbar returned that yesterday. 65CP goes back today and will revisit what is available and proven to work after CES 2021. Sincerely hope LG does the right thing with the firmware fix for eARC in April\May of this year for all of you that have hung in there.
Imagine LG is having one heck of a time fixing things in Australia, there are actual laws with teeth protecting their citizens.
So I have the B9 65" with the Denon S940H. Denon was nice enough to let me upgrade my unit to the X2600H to have eARC support. I just got the AVR installed last night and wanted to see what I got when I played Disney+ to see if one of the movies would play Atmos. Im seeing Atmos displayed on my AVR but the sound isn't Atmos quality. I have other Blu Rays with Atmos so I know the quality. Im wondering how the AVR sees this at Atmos when it's not?
Very excited to have that firmware with Multi channel PCM. I just bought my B9 a month ago and did tons of research about the best TV. I've been a Samsung fan for a long time but with eARC and hdmi 2.1 Samsung fell off the mark. I was pretty shocked to hear so many of you havent had the eARC working properly, also that it took LG so long to come out with a simple firmware update. I hope they fix this soon especially for the peeps who have been waiting almost a year. Way to stay in there.
There is no such thing as "Atmos quality". It is important to know that Dolby Atmos can us a Dolby TrueHD (lossless) or a Dolby Digital Plus (lossy) core. While most english Atmos (UHD-) BluRays are using a TrueHD core this is not the case with streaming services.
At the moment every streaming service out there uses lossy Dolby Digital Plus as a core for Atmos. Which is why the sound quality is always worse compared to a (UHD-) BluRay that uses a Dolby True HD Core.
So yea. difference you are hearing is caused by your C9. Instead you are hearing the difference between lossy Dolby Digital Plus and lossless Dolby TrueHD.
Or are you referring to the "problem" that no audio is comming from your ceiling speakers? Well... in that case it might be the fault of the audio engineers. Most Atmos movies I know do not use the ceiling speakers that much. Some movies only have like 2 - 3 minutes of effects on these speakers. Which is a joke if you ask me. There is a german YouTube channel that that tested this stuff with some movies. They turned off every speaker expect their ceiling speakers and listned to the effects that came through these speakers. In pretty much every case the "Atmos experience" was a joke. But there are also some Atmos movies with a really good Atmos mix (Like Godzilla King of the Monsers). In other words: Getting a good Atmos mix a like a lottery win. Maybe the movies you were watching on BluRay had a really good Atmos mix while those on Disney+ had not.
Just bought this television and I'm so suprised that I have to choose between having a good image experience or a good audio experience. Definitely waiting for LG's fix. Such a shame to release a television full of advanced features knowing that the basic ones are not working.
@fenster3000 I didn't know there was 2 different types of Atmos. No Im getting sound out of all speakers, it's just not as loud as the True HD versions I guess. So how can you tell from online streaming services whats Dolby true hd and dolby digital plus. It just says ATMOS. My blu rays are definitely noticable different audio quality and they arn't UHD's just plain blu ray. So even when LG comes out with a fix for it's Multi Channel PCM I wonder what content on Disney + or netflix is actually true hd Atmos quality.
My receiver looks like it codes it as Atmos but it's more like Dolby Digital plus. Because my receiver says Atmos on the screen, but my LG B9 only says Dolby Vision in the RT corner not Atmos.
I spent a lot of money for audio quality for streaming and it's a disappointment that's it's not there. They weren't kidding when they said "Future Proof". Cause it doesn't exist. LOL!!!!
"So how can you tell from online streaming services whats Dolby true hd and dolby digital plus. "
At the moment no streaming services offers lossless audio (aka True HD). Amazon, Netflix, Disney+ etc. are all using Dolby Digital Plus. That is why you can tell that they do not use True HD Instead they are using lossy Dolby Digital or Dolby Digital+ (If it is Atmos it will be DD+).
Blu-Rays will usually give you this information on the back cover. But yea. (UHD-) BluRays usually ship with lossless audio. That is one more reason why BR > streaming
Also note that this has nothing to to with the problem described in the first post. Streaming providers simply do not offer lossless audio just yet. This might change in future. But nobody knows when this will happen. Until then you have to use (UHD-) BluRays if you want to get the best possible video and audio quality.
earcing truehd atmos and dts hd/dts x fromt the pc through the tv to the avr through hdmi works perfectly fine... but the problem is -and that makes me very angry after spending 2500€- that the usb media player of my c9 does not passthrough hd audio to the avr but only the core... like wtf, is that 2010?? lg please finally update the tvs so that the usb media player can passthrough hd audio... this is a simple feature a highest end tv like that should have at the release!!!
He also has some new information regarding passthrough of lossless audio codecs (such as Dolby True HD and DTS HD MSTR): "I have this week confirmed via the Troubleshooting Team
leader at LG Australia that the LPCM fix will arrive in June 2020. I have also been told Lossless audio from apps via eARC
CANNOT be implemented. A review of the CX model indicates it has the same
issue. Long story short - LG have come back after a month of talks
and their troubleshooting team leader (Pau) has stated: LG engineers, have stated that Dolby TrueHD can ONLY be
passed through from a connected device - not an app such as plex. They assert
there can be no fix for this as an app is not considered
"passthrough" and requires the decoder."
Long story short: - The LPCM update will arrive in June - Passthrough of lossless audio via internal apps (such as Plex) can not be supported. LGs 2020 models will (most likely) share the same fate. However, passthrough from external HDMI sources works just fine.
So it's not a really smart tv after all. Then again, Panasonic don't even support the basic DTS-codec... In the long run you would have to use an external player like a Shield or Kodi box, didn't expect to have to buy it immediately.
E-arc working is at least a bit of good news, but the CX isn't that much of a step forward from a C9 as I had hoped in this depart. I'm even more disappointed at the other Oled brands of not even in 2020 having somewhat complete hdmi 2.1.
Maybe Philips will suprise us after the summer with some announcement in time with the new 2.1 devices/gameconsoles.
"fenster3000, what about passthrough via usb media player? it can passthrough dts and dd cores but still not lossless hd audio."
The USB Media Player is an internal source aswell. Which is why it will have the same limitation as apps like Plex.
"Then again, Panasonic don't even support the basic DTS-codec..." LG also removed support for DTS in their new 2020 lineup. At least it is not mentioned anwhere while Dolby Codecs are still mentioned. 2019 TVs still have DTS though
Great to see it's finally coming! Hopefully we'll see some HDMI 2.1 GPUs out this year, so I can finally use the TV I bought last year to its full potential.
"(general) - all the 2017 Denon/Marantz eARC models are expected to NOT work *8), this is NOT the LG's fault, but Denon/Marantz fault (Denon/Marantz support should be contacted ASAP to let them know and resolve this problem - Denon/Marantz does not like to acknowledge the problem, but some customers had their HDMI boards replaced with a working one (presumedly from 2018 models);"
Hello, the eARC problem with DTS-HD audio is now fixed. At least in Denon's 4400 and 6400. It has been fixed with a new firmware, released a few days ago.
Hola, el problema de eARC con audio DTS-HD ya está solucionado. Al menos en los 4400 y 6400 de Denon. Se ha solucionado con un nuevo firmware, lanzado hace unos días.
Thats great news, thanks. Lets hope the 4400 and 6400 will also accept multichannel PCM via eARC after the upcoming C9/CX Update. I guess there is no way of telling now.
Hey there, I would like to kindly ask for a little help. Is there any way I can make my soundbar play Atmos or not?
I have my PC (plays Dolby Atmos Sound) connected to LG C9 via HDMI 2.1 cable. With eArc enabled the C9 is connected via HDMI 2.1 cable to my soundbar - Sony XF9000 with eArc enabled. All the latest firmwares installed. However, I only get Dolby Vision when playing on soundbar, never Dolby Atmos. (Except for connecting my soundbar directly to the PC, but that is uncomfortable for severeal reason or when I choose the TV as the sound output... which is far from satisfying.) As many of you I have specifically chosen this setup to get both Atmos and Vision.
My question is - is there anything I can change in settings or my setup to get the Atmos on the soundbar along with the Vision? Either on C9 built in apps such as Netflix or on PC, prefferably both. Or, is the legendary patch you speak of (the 2020 Q2 patch) going to fix this or there is no hope for me?
I tried my best to understand but there are simply too many abreviations you guys are using :-) Thanks for your help.
@fortuneman7585 I've heard of people having issues with Netflix Atmos over eARC, and switching to ARC fixed their problem. As far as I can tell this issue is unrelated to the LPCM issue.
Answers
Not sure about the PC. Are you sure it's passing through a bitstream signal instead of PCM? Can you verify it's using a DTS-HD stream and not a DTS stream? Does TrueHD work in your setup?
I have a few year old Pioneer VSX-8231 ARC (not eARC) capable receiver.
I hooked it up thru the eARC HDMI, & I notice that the sound from "some" (not all), sources, such as the TV's built in Netflix & Amazon apps, and a connected Roku, just "buzz", and don't seem to pass the audio, unless I switch the TV's audio setting to PCM, & then only get 2 channel, not 5.1 ...
** Is this the problem mentioned that a 2ndQ 2020 firmware update will "fix" ???
I have hooked up an optical cable as a workaround for now....
Very excited to have that firmware with Multi channel PCM. I just bought my B9 a month ago and did tons of research about the best TV. I've been a Samsung fan for a long time but with eARC and hdmi 2.1 Samsung fell off the mark. I was pretty shocked to hear so many of you havent had the eARC working properly, also that it took LG so long to come out with a simple firmware update. I hope they fix this soon especially for the peeps who have been waiting almost a year. Way to stay in there.
There is no such thing as "Atmos quality".
It is important to know that Dolby Atmos can us a Dolby TrueHD (lossless) or a Dolby Digital Plus (lossy) core.
While most english Atmos (UHD-) BluRays are using a TrueHD core this is not the case with streaming services.
At the moment every streaming service out there uses lossy Dolby Digital Plus as a core for Atmos.
Which is why the sound quality is always worse compared to a (UHD-) BluRay that uses a Dolby True HD Core.
So yea. difference you are hearing is caused by your C9. Instead you are hearing the difference between lossy Dolby Digital Plus and lossless Dolby TrueHD.
Or are you referring to the "problem" that no audio is comming from your ceiling speakers?
Well... in that case it might be the fault of the audio engineers. Most Atmos movies I know do not use the ceiling speakers that much. Some movies only have like 2 - 3 minutes of effects on these speakers. Which is a joke if you ask me. There is a german YouTube channel that that tested this stuff with some movies. They turned off every speaker expect their ceiling speakers and listned to the effects that came through these speakers. In pretty much every case the "Atmos experience" was a joke. But there are also some Atmos movies with a really good Atmos mix (Like Godzilla King of the Monsers). In other words: Getting a good Atmos mix a like a lottery win. Maybe the movies you were watching on BluRay had a really good Atmos mix while those on Disney+ had not.
I didn't know there was 2 different types of Atmos. No Im getting sound out of all speakers, it's just not as loud as the True HD versions I guess. So how can you tell from online streaming services whats Dolby true hd and dolby digital plus. It just says ATMOS. My blu rays are definitely noticable different audio quality and they arn't UHD's just plain blu ray. So even when LG comes out with a fix for it's Multi Channel PCM I wonder what content on Disney + or netflix is actually true hd Atmos quality.
My receiver looks like it codes it as Atmos but it's more like Dolby Digital plus. Because my receiver says Atmos on the screen, but my LG B9 only says Dolby Vision in the RT corner not Atmos.
I spent a lot of money for audio quality for streaming and it's a disappointment that's it's not there. They weren't kidding when they said "Future Proof". Cause it doesn't exist. LOL!!!!
Just don't tell my wife.
At the moment no streaming services offers lossless audio (aka True HD). Amazon, Netflix, Disney+ etc. are all using Dolby Digital Plus. That is why you can tell that they do not use True HD
Blu-Rays will usually give you this information on the back cover.
But yea. (UHD-) BluRays usually ship with lossless audio. That is one more reason why BR > streaming
Also note that this has nothing to to with the problem described in the first post. Streaming providers simply do not offer lossless audio just yet. This might change in future. But nobody knows when this will happen. Until then you have to use (UHD-) BluRays if you want to get the best possible video and audio quality.
Full Credits to mgrobins (member of the AVSForum). Original Post:
https://www.avsforum.com/forum/40-oled-technology-flat-panels-general/3075344-official-2019-lg-c9-consolidated-info-faq-troubleshooting-firmware-more-11.html#post59343924
He also has some new information regarding passthrough of lossless audio codecs (such as Dolby True HD and DTS HD MSTR):
"I have this week confirmed via the Troubleshooting Team leader at LG Australia that the LPCM fix will arrive in June 2020. I have also been told Lossless audio from apps via eARC CANNOT be implemented. A review of the CX model indicates it has the same issue.
Long story short - LG have come back after a month of talks and their troubleshooting team leader (Pau) has stated:
LG engineers, have stated that Dolby TrueHD can ONLY be passed through from a connected device - not an app such as plex. They assert there can be no fix for this as an app is not considered "passthrough" and requires the decoder."
Long story short:
- The LPCM update will arrive in June
- Passthrough of lossless audio via internal apps (such as Plex) can not be supported. LGs 2020 models will (most likely) share the same fate. However, passthrough from external HDMI sources works just fine.
doesn't look good... quote:
I have mentioned this before in other threads. The service manual block diagram (see second picture here https://www.avsforum.com/forum/40-oled-technology-flat-panels-general/3057634-2019-c9a-e9-owner-s-thread-no-price-talk-297.html#post58777440) shows the audio output of the Alpha 9 chip labeled as ARC which would restrict it to lossy multichannel audio.
...
The info from LG you posted confirms this and suggests that the CX has the same limitation.
The USB Media Player is an internal source aswell. Which is why it will have the same limitation as apps like Plex.
"Then again, Panasonic don't even support the basic DTS-codec..."
LG also removed support for DTS in their new 2020 lineup. At least it is not mentioned anwhere while Dolby Codecs are still mentioned. 2019 TVs still have DTS though
Hopefully we'll see some HDMI 2.1 GPUs out this year, so I can finally use the TV I bought last year to its full potential.
So nothing LG can do.
You might want to take a look into this 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#post58227638
"(general) - all the 2017 Denon/Marantz eARC models are expected to NOT work *8), this is NOT the LG's fault, but Denon/Marantz fault (Denon/Marantz support should be contacted ASAP to let them know and resolve this problem - Denon/Marantz does not like to acknowledge the problem, but some customers had their HDMI boards replaced with a working one (presumedly from 2018 models);"
....----------------------------------------------------------....
Lets hope the 4400 and 6400 will also accept multichannel PCM via eARC after the upcoming C9/CX Update.
I guess there is no way of telling now.
I have my PC (plays Dolby Atmos Sound) connected to LG C9 via HDMI 2.1 cable.
With eArc enabled the C9 is connected via HDMI 2.1 cable to my soundbar - Sony XF9000 with eArc enabled.
All the latest firmwares installed.
However, I only get Dolby Vision when playing on soundbar, never Dolby Atmos. (Except for connecting my soundbar directly to the PC, but that is uncomfortable for severeal reason or when I choose the TV as the sound output... which is far from satisfying.) As many of you I have specifically chosen this setup to get both Atmos and Vision.
My question is - is there anything I can change in settings or my setup to get the Atmos on the soundbar along with the Vision? Either on C9 built in apps such as Netflix or on PC, prefferably both.
Or, is the legendary patch you speak of (the 2020 Q2 patch) going to fix this or there is no hope for me?
I tried my best to understand but there are simply too many abreviations you guys are using :-) Thanks for your help.
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