intermittent Latest software update broke HDMI on my LG OLED G2?

[OliverRC]

Up until a few days ago my TV and AVR have been working perfectly since I bought it.
Zero hassles with HDMI and connectivity.

Then I was prompted to update to the latest software version which I did and now often when I switch HDMI (running on 1) it picks up the device name, CEC works but I get “No Signal”… and then nothing.
Just stays on “No Signal”. It is almost as if some HDMI handshake breaks and now the driver is in a broken state.

I’ve found that if I hard power off and power on the device sometimes works but I don’t want to do that every time especially since it’s hard to get to the power.
This really strikes me as a software issue with the latest update as absolutely nothing else has changed in my setup.

I’ve tried:

• Different HDMI cables (high quality)
• Deep colour settings
• Reset the TV to factory default
• Different HDMI ports

TV

• Model: OLED65G26LA / OLED65G26LA.HFBQLWK
• WebOS TV Version: 8.3.0.2301
• Software Version: 13.30.56

AVR & Devices

• Marantz SR5015
• Nvidia Shield Pro
• PS5
   

The setup is the conventional AVR installation as shown in the attached file

 

Has anyone else experienced this? 

Is it possible to revert the software update?

[Djj]

I have experienced the same issue with Denon AVR3400H.  I’ve seen other posts along this line and hope there is a patch by LG to remediate!   It’s a large inconvenience as base LG oled sound is not terrific.

[WD4512]

I just posted about this very topic. Have you found a solution? TV keeps saying no signal no matter which port used (trying to connect our cable box) diagnostic says faulty hdmi cord to ALL that we’ve tried. Makes no sense. And yes this happened after update.

[OliverRC]

Hey, for some reason I haven't experienced the issue very much after posting it. If it does happen the only solution that seems to work for me is to hard power off the devices (i.e. turn them off at the wall) and then turn them on again.

I am not sure if they ALL need to be powered off, you can start with just doing the TV but mine are all on 1 plug so they all go off an on when I cycle the power.

[rodneuson]

Hello everyone,

I'm brand new here, so please forgive me if I make any mistakes.

I'm experiencing exactly the same issue with my LG G2, connected via HDMI 2 to a Sony STR-DH790.

This problem first appeared about six months ago, initially occurring only 2-3 times every couple of weeks. Unfortunately, it has progressively worsened, and in recent weeks, it has become constant, lasting uninterrupted for at least five minutes if left unresolved.

Last month, LG kindly replaced my TV's mainboard for free despite the warranty being expired by six months, but sadly, the issue persists. Initially, I suspected the receiver might be at fault. However, after extensive research last night, I discovered this forum and thread. It now seems likely that one of LG's updates released last year may have introduced a handshake problem.

Here's what I've tried so far:

• Disconnected all devices from the TV except the receiver.

• Disabled eARC, Passthrough, and all advanced audio output settings on the TV.

• Disabled eARC on the receiver.

• Turned off the receiver, disconnected it from power for 30 minutes, then reconnected and powered it back on.

• Turned off both receiver and TV, disconnected both from power for 30 minutes, then reconnected and powered them back on.

• Completely disconnected all cables and wires from the receiver and TV, powered them off, then reconnected and powered them back on.

• Tested with multiple different HDMI cables.

I have tried every possible combination of these solutions without success.

Attached are three videos demonstrating the issue, as well as a simple schematic of my setup.

I'm hoping someone here might have a solution, or at least confirm if LG is aware of the issue and working on a fix.

Thank you very much for your time. Have a great day!