RobNBill Posted June 15, 2021 Posted June 15, 2021 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. Quote
Gary Sheehan Posted June 17, 2021 Posted June 17, 2021 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 Quote
Chris O Posted June 17, 2021 Posted June 17, 2021 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. 1 Quote
RobNBill Posted June 17, 2021 Author Posted June 17, 2021 My issue occurs only when running the HDMI thru my Denon AVR. If run direct it works in Dolby. Quote
Seb28 Posted June 17, 2021 Posted June 17, 2021 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... Quote
RobNBill Posted June 17, 2021 Author Posted June 17, 2021 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. 1 Quote
Daemonic Posted June 17, 2021 Posted June 17, 2021 Are you guys using the Apple TV box or the App in the TV or other device? Please be specific? Quote
Philipp Z Posted June 17, 2021 Posted June 17, 2021 Hi guys, i‘ve the exact same problemc but with an onkyo receiver. I‘m using the Apple TV 4K box (not the tv app) Quote
Bobsilver Posted June 17, 2021 Posted June 17, 2021 Yes I experienced the same problem. After the update my Apple TV 4K will no longer work in Dolby Vision. Screen keeps flickering. All had been fine before this update. Quote
theFuppet Posted June 17, 2021 Posted June 17, 2021 Hello. I have same problem with Nvidia shield / Denon AVR X3200W / lg c9. Quote
Bobsilver Posted June 17, 2021 Posted June 17, 2021 4 hours ago, RobNBill said: My issue occurs only when running the HDMI thru my Denon AVR. If run direct it works in Dolby. Same experience with my Denon AVRX4400h Quote
ManuelDuarte Posted June 17, 2021 Posted June 17, 2021 Another one here. Same issue. Running Apple TV 4K (device), LG 65SM9010PLA and Denon AVR X-2600H. The screen is always flickering and unable to use Apple TV. Quote
HomeCinemaLord Posted June 17, 2021 Posted June 17, 2021 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) Quote
RoomTenONine Posted June 18, 2021 Posted June 18, 2021 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. Quote
Seb28 Posted June 18, 2021 Posted June 18, 2021 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. Quote
HomeCinemaLord Posted June 18, 2021 Posted June 18, 2021 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…. Quote
Kris Hofmans Posted June 18, 2021 Posted June 18, 2021 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. 1 Quote
LG C9 Posted June 18, 2021 Posted June 18, 2021 Same issue for me. Apple TV 4K Dolby Vision is now broken after update 05.10.04 Quote
LG C9 Posted June 18, 2021 Posted June 18, 2021 Same issue. Update broke Dolby Vision on Apple TV 4K connected to Marantz SR 7013. Quote
PaulAng Posted June 18, 2021 Posted June 18, 2021 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 2 Quote
Dicesdad Posted June 18, 2021 Posted June 18, 2021 I’m having the same problem. LG chat support said that a software tech or developer should contact me. Quote
Dicesdad Posted June 18, 2021 Posted June 18, 2021 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. Quote
chris corbray Posted June 19, 2021 Posted June 19, 2021 I just updated, and lost much of my TVs brightness and sharpness. Can these updates be taken away? Quote
Pasquale Santangeli Posted June 19, 2021 Posted June 19, 2021 LG has to fix this ASAP. Same issue for me, as soon as I upgraded the software the Dolby Vision on Apple TV 4K stopped working (the screen started flickering). I had to temporarily reverse to HDR video which is suboptimal. Quote
HomeCinemaLord Posted June 19, 2021 Posted June 19, 2021 If you want this to be fixed, write to the LG Support! Without enough feedback they will do literally nothing.. link hidden, please login to view !! 1 Quote
Gfeltner78 Posted June 19, 2021 Posted June 19, 2021 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). 1 Quote
theFuppet Posted June 19, 2021 Posted June 19, 2021 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. Quote
RobNBill Posted June 19, 2021 Author Posted June 19, 2021 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? Quote
private Posted June 19, 2021 Posted June 19, 2021 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. Quote
private Posted June 19, 2021 Posted June 19, 2021 I knew I forgot something: link hidden, please login to view Quote
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