@dfa973 1. As far as I understand the C9 actually has 2 chipsets (If I recall correctly Vincent Teoh posted this). From which one of them is disabled at the moment. Thats why my guess is, that the C9 simply does not have the bandwidth at the moment in order to deliver "true" 2160p@120 (thats why I called this update "48G update). Or are you saying that the C9 does not support 48G in general (From what I have heard LG already confirmed 48GBit)? Instead they are using a 2.0b chipsets that will support 2160p@120@4:2:0?
2. That is new to me. When eARC first arrived on some AVRs a few years a go saw some videos and articles on how they implemented eARC on non-2.1 chipsets. Back then all of them used a dedicated chip in order to deliver eARC. Manufacturers also could not guarantee support for future devices. As it turned out this is true (as we know by now). But ok, if manufacturers somehow changed this stuff to include eARC directly into the 2.0b chipsets thats fine.
@mrhollywood360 All we know is that the 2160p@120 update will rollout later this year. But if dfa973 post right we should not expect any change regarding the LPCM issue.
fenster3000 1. There is no such thing as "the HDMI 2.1 48G update" for the OLED C9! 2. The HDMI 2.0 does support eARC natively (if designed in advance), no need for a "dedicated eARC chip"; 3. There is no "dedicated eARC chip that should be disabled" after "the HDMI 2.1 48G update" that does not exist;
There are only 2 features that are still missing from the C9: - support for 4K/2160p 120Hz content via HDMI 2.1 ports; - support for HDCP 2.3; Those features will be delivered via future firmware updates.
I could imagine that the update, that enables the 48G HDMI chipset, will "fix" this issue. At least thats what I am hoping for.
As far as we know the C9 actually has two HDMI chipsets (1x 2.0b 18G, 1x 2.1 48G). Unfortunately the 2.1 48G chipset is still disabled right now. In other words: The TV is curretly using a HDMI 2.0b chipset. Since HDMI 2.0b does not support eARC natively manufacturers have to workaround this with an dedicated eARC chip. This chip might be the bottleneck. On the other hand True HD and DTS HD MSTR seem to work fine... But still. We already know from sine AV-Receiver manufacturers that there are some AVRs that have a similar problem with eARC (Thats the way it is if manufacturers have to find their own way to implement something).
Anyway... Since "true" HDMI 2.1 48G has native support for eARC the dedicated eARC chip should be disabled then. This gives me hope that the HDMI 2.1 48G update will fix it. At least this is another chance for proper eARC support.
It is still frustrating that we still do not have a concrete answer regarding this problem.
Yeah, to say I am disappointed in LG would be a total understatement. Their whole customer service channel has been less than helpful as they've opted to employ stall tactics as evidenced in this thread. As as Canadian customer, I reached out to LG Canada by writing in with regards to the issues discussed in this forum (including a link to this thread) in addition to the full laundry list of issues regarding their half baked implementation of HDMI 2.1. I received the following one liner:
"As noted the issue has already been referred to the factory, we cannot offer any further assistance."
A total slap in the face for what I spent on this equipment. Not even an acknowledgement of the issue. I've also passed my return window so now I'm at the mercy of when, if ever, LG chooses to release a fix.
With regards to @JamalofLG reaching out to engineering, I think it's safe to say that if he hasn't received atleast an acknowledgement of said issues, we shouldn't be holding our breath for a fix anytime soon, if ever.
I will also be returning the TV - this is simply false advertising.
In addition, the lack of PCM passthrough has severe knock-on effects for connected Windows 10 PCs. Since you're forced to connect an additional HDMI cable directly to your receiver to get adequate surround sound, and this requires a second virtual display, it completely messes up your windows and apps every time you power cycle the TV. This seems to be because the second display desktop resizes to something tiny like 640x480, and Windows, in its ageless wisdom, decides you must want all of your app windows resized to fit.
I was initially excited to simplify by PC gaming rig with eARC. Now it's a headache every time I use it!
BEYOND disappointed with my purchase of the LG C9. Audio lag with every single device i have connected via eARC (Xbox, PS4, Nintendo switch). It's unusable. (For ref, i have the Samsung Q90R soundbar which supports eARC audio).
Utter waste of money currently.
I will be returning this if this isn't sorted soon, and going with a competitor.
OMG 3 months passed and there haven’t been any report from an engineering team. What a shame, LG . If this issue isn’t fixed soon I’m going to buy Sony oled
I see this as a fundamental feature for a TV at this price. I was planning on updating my old Sony Bravia to a C9 but if this isn't resolved in a couple of months I'll be forced to look into Samsung or any other brand. For me, this "mistake" is absolutely inexcusable for this TV series
If you are in a country with good consumer protection laws you may be able to return/replace the TV if you bought it on the basis of advertised/announced features that do not eventuate. I will look at these options if eARC and BFI are not fixed before next year's model comes out, as without them there is very little to recommend the C9 over the much cheaper C8 for me.
@JamalofLG, any possibility that you could again reach out/inquire with LG's engineering department for correspondence? All we're asking for is acknowledgement as these limitations/issues are obviously a widespread problem.
Indeed. This is strange. Maybe they are working on the summer update that brings 4K@120 + HDCP 2.3. At least that is the only plausible reason. But still... at least a small response from the devs would have been nice.
Well I don't know how LG as a company internaly works but I do find it quite odd that a community manager asks the dev department about an issue and doesnot get any message back after more or less two month of waiting time.
So I guess all we can do is to inform as many people we can about this issue...
I too bought the LG C9 in large part due to the eARC support, hoping the TV would last as long as my panasonic plasma did (~10 years). Having waited over a year to make the jump to OLED and justifying £3k as a long-term investment, it is concerning that LG have been quiet on their intention to fix the issues...am I going to have to replace this TV when the PS5 comes out?
I hope LG can provide something concrete soon, as I am not likely to recommend them currently. I understand that Jamal is not going to want to post as currently they are informative but definitely not helpful.
As a new owner of the LG C9, I too am frustrated at the lack of proper multi-channel LPCM support. You'd think that after spending a small fortune on this equipment, proper LPCM support would come standard in 2019. This issue alone prompted me to research the matter online which ultimately led me to several online forums where many other C9 owners have voiced the same issues. I then decided to create an account on this forum and post this comment in effort to add my name to the growing list of owners who want this remedied ASAP. I hope that LG provides a response and a proper fix (firmware) to this sooner than later as I can't currently utilize my sound system to it's full potential. Unacceptable.
I would like to use my Xbox One X connected to my LG C9 TV and then eARC to my AVR. I cannot do this with the desired LPCM, as this LG issue has not been fixed.
I just got the OLED65C9 and found out the hard way that multi channel PCM pass through isn’t supported via eARC. This is unfortunately a deal breaker for me so this TV will be returned and I’ll get the Sony A9G which supports this flawlessly. It’s really a shame, as besides this issue the TV is outstanding...
I am really shocked to discover this. I just got an OLED55C9. One of the main drivers to upgrade was eARC for sound from my PC (PC->TV->X6500H), but now I discover it can only do stereo from a PC. Truly awful omission.
When do we think it will be fixed. Might have to return my TV otherwsie
Just to avoid confusion: I also tested the eArc of the c9 and I have tested spoofing the edid with an HDFury Maestro device (which is also the eArc client). Wether the source is a PS4 Pro or Apple TV here, I get the same effect: only FL and FR are forwarded when the TV eARC mode is set to "auto" or LPCM. The TV also has a setting to support bitstream forwading but in that case there is no sound at all. So in neither case, also not with the help of a HDfury box LPCM 5.1 or 7.1 over eArc can currently be enabled. A more comprehensive fix then only adjusting the edid is required. I am also a customer who waited for the C9 (as opposed to the C8) to use the new eArc feature, assuming LPCM 5.1 would be included. So LG development please fix this, only then the TV is the best TV ever (and one could argue eArc is currently not fully implemented).
They won’t fix this, they will use it as a feature to sell us a new TV next year. I bought this TV hoping to be ready for PlayStation 5 next year, but it looks like as forward facing as it may be, it’s still not ready for the future. I absolutely must have 5.1 LPCM through eARC so I can get my 4k @ 120hz from the PS5 and still have my lossless surround sound. I have a couple more days before the return window is up, so I’ll probably pack it up this weekend. Too bad because I really enjoy the TV, but I can’t buy a new one for the PS5 next year. It’s not reasonable. Maybe the C20 will be the one finally.
Answers
1. As far as I understand the C9 actually has 2 chipsets (If I recall correctly Vincent Teoh posted this).
From which one of them is disabled at the moment. Thats why my guess is, that the C9 simply does not have the bandwidth at the moment in order to deliver "true" 2160p@120 (thats why I called this update "48G update). Or are you saying that the C9 does not support 48G in general (From what I have heard LG already confirmed 48GBit)? Instead they are using a 2.0b chipsets that will support 2160p@120@4:2:0?
2. That is new to me. When eARC first arrived on some AVRs a few years a go saw some videos and articles on how they implemented eARC on non-2.1 chipsets. Back then all of them used a dedicated chip in order to deliver eARC. Manufacturers also could not guarantee support for future devices. As it turned out this is true (as we know by now). But ok, if manufacturers somehow changed this stuff to include eARC directly into the 2.0b chipsets thats fine.
@mrhollywood360
All we know is that the 2160p@120 update will rollout later this year. But if dfa973 post right we should not expect any change regarding the LPCM issue.
1. There is no such thing as "the HDMI 2.1 48G update" for the OLED C9!
2. The HDMI 2.0 does support eARC natively (if designed in advance), no need for a "dedicated eARC chip";
3. There is no "dedicated eARC chip that should be disabled" after "the HDMI 2.1 48G update" that does not exist;
There are only 2 features that are still missing from the C9:
- support for 4K/2160p 120Hz content via HDMI 2.1 ports;
- support for HDCP 2.3;
Those features will be delivered via future firmware updates.
As far as we know the C9 actually has two HDMI chipsets (1x 2.0b 18G, 1x 2.1 48G). Unfortunately the 2.1 48G chipset is still disabled right now. In other words: The TV is curretly using a HDMI 2.0b chipset. Since HDMI 2.0b does not support eARC natively manufacturers have to workaround this with an dedicated eARC chip. This chip might be the bottleneck. On the other hand True HD and DTS HD MSTR seem to work fine... But still. We already know from sine AV-Receiver manufacturers that there are some AVRs that have a similar problem with eARC (Thats the way it is if manufacturers have to find their own way to implement something).
Anyway... Since "true" HDMI 2.1 48G has native support for eARC the dedicated eARC chip should be disabled then. This gives me hope that the HDMI 2.1 48G update will fix it. At least this is another chance for proper eARC support.
It is still frustrating that we still do not have a concrete answer regarding this problem.
"As noted the issue has already been referred to the factory, we cannot offer any further assistance."
A total slap in the face for what I spent on this equipment. Not even an acknowledgement of the issue. I've also passed my return window so now I'm at the mercy of when, if ever, LG chooses to release a fix.
With regards to @JamalofLG reaching out to engineering, I think it's safe to say that if he hasn't received atleast an acknowledgement of said issues, we shouldn't be holding our breath for a fix anytime soon, if ever.
Smh...
In addition, the lack of PCM passthrough has severe knock-on effects for connected Windows 10 PCs. Since you're forced to connect an additional HDMI cable directly to your receiver to get adequate surround sound, and this requires a second virtual display, it completely messes up your windows and apps every time you power cycle the TV. This seems to be because the second display desktop resizes to something tiny like 640x480, and Windows, in its ageless wisdom, decides you must want all of your app windows resized to fit.
I was initially excited to simplify by PC gaming rig with eARC. Now it's a headache every time I use it!
Audio lag with every single device i have connected via eARC (Xbox, PS4, Nintendo switch). It's unusable. (For ref, i have the Samsung Q90R soundbar which supports eARC audio).
Utter waste of money currently.
I will be returning this if this isn't sorted soon, and going with a competitor.
If this issue isn’t fixed soon I’m going to buy Sony oled
Maybe they are working on the summer update that brings 4K@120 + HDCP 2.3.
At least that is the only plausible reason. But still... at least a small response from the devs would have been nice.
I hope LG can provide something concrete soon, as I am not likely to recommend them currently. I understand that Jamal is not going to want to post as currently they are informative but definitely not helpful.
When do we think it will be fixed. Might have to return my TV otherwsie
Thanks for your feedback. Please keep us informed. Hopefully LG will fix this soon.
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