kring

4790K
newest LG OLED CX Firmware, 
3080
 
still flickering in dark scenes. @cyberpunk
Dark is really wached out.
 
playing it SDR now 

Any other games have this issue?   what's your CX settings, windows HDR & display settings, and your Nvidia control panel settings.
 
For the CX, did you go through the home menu and set the input type to PC (it's default is HDMI which is not the best option), did you confirm instant game response and Ultra Deep are both on? Black levels forced to LOW?
 
In Nvidia control panel did your confirm it's set to PC mode at 3840x2160 at 120 hz with the 4 settings of 32-bit, 10 bpc, RGB, FULL,  and confirm G-sync is set to Enable Full screen only (not windowed)
 
In Windows Display settings, is HDR on? (for me the last Nvidia driver install disabled HDR in Windows), I also found that under advanced Display my refresh was switched from 120hz to 119.880 Hz...  does your show the same?  Under Graphics setting is Hardware-accelerated CPU scheduling & Variable refresh rate both enabled?  I havn't found enough info on which is correct... it sounds like 119.880 is the CX's actual frequency... so I am going to leave it on that for now - but maybe  you try setting to 120, or vice versa to see if it fixes your flickering?
 
I also found a strange issue with windows that happens... if you turn on HDR in windows display settings, then click "Graphics Settings" and do nothing but click back, your screen dims substantially.. so something is not right....  the fix is to turn off HDR and back on again... then confirm in advanced settings yoru windows refresh rate is still 120hz.
 
the other issue could be the cable, which model do you have?  most of the cables out there are bad, even the 8k ones.

Not having any of the issues you discuss on my CX48".
 
I am at 3840 x 2160, @ 120 Hz. Also have 32 - bit, 10 bpc, RGB full settings with HDR set to enable full screen. 
 
This is the cable I am using for HDMI 2.1
https://www.amazon.ca/gp/product/B07S196T4Z/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
 
Used the EVGA FTW3 Ultra 3090 first and now the 3090 KP

A new software version install a couple days ago for me as well. No issues with it to this point, version 03.21.09

Washed out Black and flickering only in Cyberpunk. Havent noticed it in any other Game! its most likely a Game Issue. 
Got a good cable and Settings in nvidia control panel same as you!
 

I just got a 3090 the other day right as I got the 3.21.09 LG CX firmware and I get the flickering in Plex and other media (no games as of yet) but turning off Instant Game Response fixes that.
 
What I'm getting now which is really annoying is my audio from my receiver through E-ARC just won't go through a lot of the time until I power cycle my receiver, or mess with switching Windows between Stereo and Atmos. Sometimes when playing Atmos content, it only plays Linear PCM instead. I also get it where I get no signal from my PC to my CX for a solid few minutes to 10 mins and then it'll randomly show up and then only just show the boot screen as if my computer was just turned on. I'm using the same Zeskit HDMI 2.1 cable that doorules posted as using reliably.
 
Not sure if it's the GPU, the new firmware or what, but the HDMI cables are being used on all my devices now and they work great with everything else (Series X, PS5, Shield).

I'm losing signal every so often, is this a problem with the LG?  Other than that, my TV has been better than any monitor I've previously owned.  I'm using the Kingpin.

aberdie
I'm losing signal every so often, is this a problem with the LG?  Other than that, my TV has been better than any monitor I've previously owned.  I'm using the Kingpin.

At this point it could be anything. Cable, gpu, tv.
LG seems to be aware of some problems with the Ampere cards. But this is all i saw, apparently they are working on firmware fixes. Nothing special mentioned.
EVGA and NVIDIA... well, Evga is responding something every week to my ticket, nvidia every day. But none of them seem to have a clue, or at least not wanting to disclose. All i got was generic troubleshooting tips yet.
 
The other interestint thing i just read on avs forums, that one of the fibre hdmi 2.1 active cable manufacturers says, that their cable is working with all ampere cards, except evga. Now while i am not interested in extra long active fibre cables, this might indicate that EVGA botched up something in their HDMI 2.1 implementation? But there is no more information, if this can be fixed or not... or what it even means for us.

I received the 3.21.09 LG CX firmware a few days as an update from LG so installed it. Big mistake. Now I have problems with the monitor waking when computer comes out of sleep, excessive brightness changes during use, syncing with the computer when power is turned on and occasional flickering.
 
Was working much better before this update.
 
Is there a way to revert this?
 
 

eric-mt
I received the 3.21.09 LG CX firmware a few days as an update from LG so installed it. Big mistake. Now I have problems with the monitor waking when computer comes out of sleep, excessive brightness changes during use, syncing with the computer when power is turned on and occasional flickering.
 
Was working much better before this update.
 
Is there a way to revert this?

Not without LG sending out a repair guy to replace the main board.
 
I suggest unplugging the TV and letting it sit for a minute or two, or a factory reset as mine isn't having those issues with the new .09 update.

LocutusHUN

aberdie
I'm losing signal every so often, is this a problem with the LG?  Other than that, my TV has been better than any monitor I've previously owned.  I'm using the Kingpin.

At this point it could be anything. Cable, gpu, tv.
LG seems to be aware of some problems with the Ampere cards. But this is all i saw, apparently they are working on firmware fixes. Nothing special mentioned.
EVGA and NVIDIA... well, Evga is responding something every week to my ticket, nvidia every day. But none of them seem to have a clue, or at least not wanting to disclose. All i got was generic troubleshooting tips yet.
 
The other interestint thing i just read on avs forums, that one of the fibre hdmi 2.1 active cable manufacturers says, that their cable is working with all ampere cards, except evga. Now while i am not interested in extra long active fibre cables, this might indicate that EVGA botched up something in their HDMI 2.1 implementation? But there is no more information, if this can be fixed or not... or what it even means for us.

Yeah, I didn't have a problem on my 2080ti and the LG.  Maybe some compatibility issue with the 3000 series, hopefully my gpu isn't dying already.

Fiber Cable manufacturer RuiPro has confirmed that EVGA 30 series cards are incompatible with their cables and they are still looking into why this is.  I will provide an update when if RuiPro lets me know of any changes but as of now it seems _something_ is up with EVGA 30 series cards which causes dropouts other HDMI 2.1 devices are not having.  This should be a high priority issue for EVGA.

The EVGA GPUs may be not compatible with our 8K Fiber HDMI cable at present.
While most of other 3080/3090 GPUs can work well with our 8K fiber HDMI cable.
Currently we have not fould the solution and the solution would come out in the end of Jan.,2021.
Once we upgrade to support EVGA GPU, I will send it to you immediately.