Quantcast
Jump to content

C9 Update - 05.10.04 - Can no longer connect to Dolby

RobNBill
 Share

Recommended Posts

RobNBill Rookie

RobNBill

Posted
Posted

Since this update the Apple TV 4K can no longer connect to Dolby via HDMI.  Immediately prior to this update - it worked.

Now, if you attempot to connect and set it to Dolby - the screen flashes the Apple TV screen on and off - it can't stabilze.

This happened immdeiately after the update.  

Can I revert back to the prior software?  Or, can you send me a version that does not have this issue.

Gary Sheehan Newbie

Gary Sheehan

Posted
Posted

I am experiencing the same thing. I was watching a show in Dolby Vision and stepped away for a bit. The tv restarted and the new software installed. Immediately after, I got the same unstable picture. I had to switch Apple TV to 4K HDR to finish watching the same show I had been watching in Dolby Vision a few minutes earlier. Very frustrating!

AppleTV 4K through a Sony STR DN 1080

Chris O Newbie

Chris O

Posted
Posted

Just wanted to jump on and say I have the exact same issue:

Apple TV 4K (2021) + LG C9 + webOS version 05.10.04 + Dolby Vision 

It ends up in random and regular black flashes and the Dolby vision logo appearing on the top right.

  • Like 1
Seb28 Newbie

Seb28

Posted
Posted

Hi, I have the exact same problem, also going through a Denon AVR.

The update broke something, always worked fine until then. I hope the issue gets to LG so they can fix it quickly but until now support blames my internet connexion (fiber lol) and refuses to acknowledge the problem...

RobNBill Rookie

RobNBill

Posted
  • Author
Posted

On the Denon, if you enable "Pass Through" of the ATV while in standby mode - you can select Dolby on the ATV and the C9 accepts.

Guessing LG made a change that affects HDMI communication with the Denon since it was working fine immediately prior to the update.

I have a ticket open with LG - they said their sofware enginners would get back in a couple of days.  If I get a resposne i'll post it here.

 

  • Thanks 1
HomeCinemaLord Newbie

HomeCinemaLord

Posted
Posted

Having the exact same issue since i did the update today. Enabling Dolby Vision causes massiv screen flickering. Absolut desaster.

tried different cables, inputs…

LG messed it up. Unfortunalty not the first time (since half a year 4k 120hz aint working with nvidia 3000 generation. They know it. they are „working on it“.) 

i hope there will be a fix soon.

 

setup:

LG C9. 
Denon Receiver.

AppleTV 4K (2021 Version)

RoomTenONine Newbie

RoomTenONine

Posted
Posted

I received the 5.10.04 update to my C9 today.  I am in the US.  The update immediately broke Dolby Vision where it flickers and the screen cuts out like it constantly connects and disconnects from the Dolby stream.  It is worse with 60fps content vs 24fps.  I have a 2019 nVidia Shield Pro and Panasonic UB820 running through a Sony STR DN1080 with 48gbps certified HDMI across the board.  I have had no issues with Dolby Vision until this update.  Please fix or at least let us roll back to the previous firmware.

Seb28 Newbie

Seb28

Posted
Posted
16 hours ago, RobNBill said:

On the Denon, if you enable "Pass Through" of the ATV while in standby mode - you can select Dolby on the ATV and the C9 accepts.

Guessing LG made a change that affects HDMI communication with the Denon since it was working fine immediately prior to the update.

I have a ticket open with LG - they said their sofware enginners would get back in a couple of days.  If I get a resposne i'll post it here.

 

Enabling pass through of the ATV, I still got a black screen after 3 minutes of watching a video. Seems random, could be every 30 secondes or every few minutes.

HomeCinemaLord Newbie

HomeCinemaLord

Posted
Posted

LG Support is a desaster…

I reported them about the issue. They answered my with a „no reply“ E-Mail Adress and said they need proof. But i could not reply, because the e-mail doesnt allow it *facepalm*

So i contacted them again and put a link to this discussion it.

I refuse to believe that nobody at LG has an Apple TV or nvidia Shield to test this issue….

Kris Hofmans Newbie

Kris Hofmans

Posted
Posted

I'm also running into this issue ... very frustrating for a television that's often used with receivers/apple tv's, that means they don't do a lot of testing before they push out firmware updates.

  • Like 1
PaulAng Newbie

PaulAng

Posted
Posted

LG needs to fix the broken Dolby Vision when connecting via an AVR. Seems that Pioneer issued an update. Connection Denon/Marantz is broken. @LG test your updates before pushing them to aTV. We do not need crapy updates. We can wait until the tests are done

  • Like 2
Dicesdad Newbie

Dicesdad

Posted
Posted

If you haven’t already contacted LG you should. The more that complain the faster they’ll fix it. The wheel that squeaks get the oil. My affected receiver is a Sony STRDH790 7.2 Channel AV Receiver. My LG TV looks like crap without Dolby Vision. I even complained to the President of LG, which you can through their website.

Gfeltner78 Newbie

Gfeltner78

Posted
Posted

Same issue, but an interesting wrinkle with mine.  LG C9, same update as everyone and Dolby Vision is broken between my Apple TV 4K and Denon AVR.

what is interesting is Dolby Vision runs just fine between my Sony UHD player running through the same Denon to the same TV.  

So it has to be something specific to the LG and the Apple TV 4K (I have the 2021 Apple TV 4K by the way).

  • Like 1
theFuppet Newbie

theFuppet

Posted
Posted
18 minutes ago, Gfeltner78 said:

Same issue, but an interesting wrinkle with mine.  LG C9, same update as everyone and Dolby Vision is broken between my Apple TV 4K and Denon AVR.

what is interesting is Dolby Vision runs just fine between my Sony UHD player running through the same Denon to the same TV.  

So it has to be something specific to the LG and the Apple TV 4K (I have the 2021 Apple TV 4K by the way).

Well shit.. like i said. Nvidia shield here.. so not specific. Works fine directly connected to my 77c9. But not working like it should while going through my Denon receiver.

RobNBill Rookie

RobNBill

Posted
  • Author
Posted
25 minutes ago, Gfeltner78 said:

Same issue, but an interesting wrinkle with mine.  LG C9, same update as everyone and Dolby Vision is broken between my Apple TV 4K and Denon AVR.

what is interesting is Dolby Vision runs just fine between my Sony UHD player running through the same Denon to the same TV.  

So it has to be something specific to the LG and the Apple TV 4K (I have the 2021 Apple TV 4K by the way).

Hi - Is your Sony output Dolby?

private Newbie

private

Posted
Posted

Opened a case today, 19-Jun-2021, with LG support. Some additional information:

- My setup:  internet <- cat5 -> Roku Ultra HDR 4K UHD  <- HDMI -> Denon AVR-S960H <- HDMI -> LG OLED

- I'd recommend using LG chat. Email results in typical "reset this, reset that". You'll need model and serial number of TV.  Email response from LG stated that chat is only open M-F. but someone did respond today (Saturday). Open cases!

- I had the LG rep add the link to this thread to the escalation ticket.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Popular Now

  • Similar Topics

    • Interstellarkev
      For those with LG monitors with Higher than 144hz that have the new software and UI UPDATE version 03.11.22 and that have NVIDIA GPUs, here's where you can DISABLE DSC to allow the DSR factor again. UPDATED JULY 16, 2026 (07-16-26)
      By Interstellarkev
      This is for all that have LG monitors with the latest software that changed UI settings for GAME OPTIMIZER
      I could not find this anywhere on the internet for an update on what happened to the compatibility modes for DisplayPort/HDMI. Everything is outdated.
      Apparently LG updated their UI and MOVED the option for compatibility modes to disable DSC. This USED to be in the common GENERAL tab, but NO LG moved it to the External Devices, which makes no sense as it should be with the common general menu.
      I'm not sure if this is a bug or an oversight, but here it is
      SETTINGS BUTTON > GENERAL > EXTERNAL DEVICES > INPUT COMPATIBILITY
      Why would you disable DSC, you ask?
      Well, if you don't disable this mode, you will not be able to use scaling factors like DSR on NVIDIA. I have seen remarks about AMD being able to use it without this option turned off, but for NVIDIA they are behind on this.
      This WILL disable high frame rates beyond 144 Hz for the trade-off, but you will be able to scale your resolution higher.
       
      link hidden, please login to view
      TESTED 1.4dsc off (full dsr support higher res)
       
    • catraveler
      LG web browser needs update to latest version, I get "browser out of date" error with some programs
      By catraveler
      The LG internet browser is out of date. 
       I get that error message with many sites. 
    • stevef
      BUG!!! Audio over ARC always muted since WebOS 5.5 update on lg-oled65c9pla
      By stevef
      Since my lg-oled65c9pla auto-updated to WebOS 5.5, there is a new bug.
      The TV is connected to my Cambridge Audio Evo 75 amplifier over ARC - on powering the TV, it has always started up the amp, and switched it to use audio, instead of the appalling TV speakers. The whole setup has worked flawlessly for 5 years, but since WebOS 5.5, the amplifier starts, but is left in a muted state, and using the un-mute or volume controls on the TV remote makes no difference to turning on audio. The only way to get audio to play though my amp a speakers is to turn the amp's volume dial or press a volume button on the a amp's remote - this then unmutes the TV and audio is back. 
      There is no setting I can find in the TV that relates to whether the ARC channel starts muted or not...
      No software has changed in my amp.  This is an annoying new bug in the TV software, I assume down to some CEC changes.
       
    • Fredrik Andersson
      Bluetooth headphones won't connect
      By Fredrik Andersson
      Hi,
      I have a OLED77C34LA and a pair Bose QC32 II headphones and I have trouble connecting to the tv.
      First the headphones works good on my other three devices but the TV has trouble, when I manage to connect they work perfect but when I turn the off on on again the headphones will say they are connected to the TV but the TV most of the time won't give me an option to connect and I remember I got a popup asking if I wanted the use the headphones as output but only for like 3-4 times so far.
      Usually I have to plug the power out of the TV for a while and remove the bluetooth device but and it doesn't always work. It's not great spending like 15min to get the headphones to work.
      Any ideas what could be wrong?
    • Matt79
      Slight soap opera affect after latest firmware update
      By Matt79
      I've just updated my LG 55UM75 TV to the latest software version - 05..20.15 - and now the picture looks off.
      I've turned off TruMotion, Motion Eye Care, Smooth Gradation, Noise Reduction and Smooth Gradation, but somehow everything still looks artificial.
      Is there another picture setting I'm missing, I've gone through every setting I can find.

WEBOS FORUMS

MORE SECTIONS

FOLLOW US ON

×
×
  • Create New...