LocutusHUN

kring
A new bios has been released - it's on the Korean site which is compatible with  US models, but not UK models.   version is 3.21.09
 
this has a lot of little fixes - VRR, flicker @ 120hz, G-sync better compatibility.  I've been using for a few days and it's been working great... so upgrade, or wait till it it's real soon via the TV.
 
https://www.lgservice.co....6%B4_OLEDxxCXX_GXX_O20

 
How do i download something from this mess?
I assume the lower 2 are the download links, but wich one, and why isnt anything happening if i click on them?

kring
I think I figured out what's causing the TV to report bad screen resolution to the card/windows... there is a setting under PICTURE - OLED SCREEN SAVER -> SCREEN SHIFT.  when this is enabled it sends tons of bad information to the card/windows which windows then tries to compensate by resizing and moving all of your windows around which is extremely frustrating, especially since it's takes windows like Chrome and shifts them to tiny 200 x 400 windows in the top-left corner of the screen.
 
I disabled this setting and now my windows have been stable for the last few restarts... and for the first time this morning, my system woke from sleep...  fingers crossed I'll try this for a few more days to see if this setting is the cause of all of my problems.
 
BTW - this setting is intended to prevent burn-in, by literally moving the presented screen around within the TV's total screen space...  it does this by the TV actually having more pixels than 2160 x 3840, I don't know the exact count but to explain maybe it has 2180 x 3860 fully functional and usable pixels.  when you display 2160x3840 you'll actually get a black border of pixels turned off, 10 pixels on each side.  the first pixel at top-left starts at pixel position 10/10, well pixel shift will occasionally change it to 8/10, 10/8, 9/9, 11/11 - it shifts your screen around by 1 or 2 pixels... occasionally you can actually see it happen on the screen.. a minor shift, most noticeable when looking at something static.   the idea is that these little shifts result in pixels having to change what they display and therefore reduce burn-in chances...  all well and good if it hid this activity from leaving the TV signal, but unfortunately the way it's reporting each shift in pixel I think windows/GPU is getting fed bad information or confusing information.
 
To me I would consider this a major bug because it's extremely annoying.   seems that other devices don't have the same reaction, but for some reason the 3090 and latest version of windows with VRR/HDR and latest drivers don't take well to screen shift enabled.
 
Are any other LG OLED owners experiencing similar issues?  

Veratu
 
 
Do you by chance have multiple monitors hooked up, or just a single monitor?

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.

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.

bcizmar
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.

Intoxicus

kring

1. Set Nvidia Control Panel G-sync -in Nvidia control panel and all your games MUST have VSYNC off, or it will clamp it low, for me I had a few that were stuck at 60hz wth v-sync on, some let it go to 120, but locking v-sync on defeats the purpose of having G-sync.  Makes sure G-sync is enabled on your display as well!

That must be a bug because you're supposed to have vsync on with no triple buffering for best Gsync results.

I also set it to application controlled for preferred refresh rate. I found highest available doesn't always work properly.

Sultan.of.swing
I've had my 48" CX for going on 5 months or so now.  When I first got it I had a 2080ti paired with it and all was well.
The out of the blue every now and then I would get no signal sometimes when waking the PC from sleep, this took a power cycle to get signal back.
That turned into no signal sometimes when I would boot to BIOS and reboot back to the desktop or if I power Cycled my PC I would get the same and another power cycle would fix it.
Fast forward to present and I am on a 3090 and still have the same issues despite around 10 fresh windows installs/Driver installs.
 
Just at Random if I restart the PC I will get no signal and please don't let me have an overclock that is unstable,  when That happens I have to power cycle a few times to get signal back after a reboot.