Hello guys, Hope all is well. I have been experiencing a weird issue with my 4090. First of all, the screen sometimes randomly flickers at desktop or in game. It will turn black for like 1 second. I have a 4K monitor (LG Ultra Gear 32GQ950-B) connected using DP. it used to happen every now and then but now it is just worse and happening everyday. Another issue is DX12 games. sometimes when I try to run any DX12 game, it just crashes on load. (RDR2, Control, BF 2042, FH 5, etc) with a device removed error. However when I try to launch the same game or any other game in DX 11 it runs fine. I don't know if this HW or SW related  (Driver, GPU, CPU, etc). When this happens DX12 games just won't launch unless I restart the PC and when it runs, it runs fine and no in game crashes.
 
Any ideas what could this be ?
 
TIA. 

For the flickering make sure you’re using a vesa certified dp cable. If you’re already using a vesa certified dp cable then I would suggest trying the other dp outputs on your gpu to see if they will also experience the same issue or not. For the crashing issue I would suggest running your gpu at stock clocks if it’s overclocked. I would also suggest underclocking the card if you have a 4090 model that comes preoverclocked from the factory to see if that might help resolve your crashing issue.

Run your cpu at stock clocks along with running your ram at 5600. See if that does anything for you.

Ok. If that doesn’t help then you may have a problem with your monitor as far as the flickering is concerned. I would recommend you disable all adaptive sync technologies such as freesync & g-sync as that may be the cause of your flickering issue. For your dx12 issue it may be related to windows 11. I’d suggest trying windows 10.

Sajin
Ok. If that doesn’t help then you may have a problem with your monitor as far as the flickering is concerned. I would recommend you disable all adaptive sync technologies such as freesync & g-sync as that may be the cause of your flickering issue. For your dx12 issue it may be related to windows 11. I’d suggest trying windows 10.

 
I'll give it a shot.
 

blaise
Have you checked if the monitor has the latest firmware installed? I've had that monitor for about 12 months, and I believe there have been at least two updates in that time. You can check this (and update) by running LG's "OnScreen Control" utility.

 
Yup. I have the latest FW installed.

The error you posted is usually related to the gpu being unstable at whatever it attempts to run at. I’d suggest trying to run at max negative clocks on both the core/memory via msi afterburner to see if that helps or not.

No problem. A unstable gpu could cause all sorts of errors, but usually it would cause the game you’re playing to crash, or you would see artifacts. Looks like you might need to find another gpu to test with, or try your gpu in a friends system to verify your card isn’t the issue.

Well before you break your loop down I would suggest testing windows 10 first on spare ssd.

Doubt the psu is the issue.

Hmm, that is really odd that running BF2042 would cause the issue to manifest. Have you gotten around to trying windows 10 yet?

Thanks for the headsup Stardust_One. I take back what I said. It seems there is a problem. I see alot of errors in the event viewer related to the GPU and nvidia process nvlddmkm. A sample of the errors below:
 
The description for Event ID 14 from source nvlddmkm cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
\Device\Video3
Row Remapper: New row marked for remapping, reset gpu to activate.
(OR) Variable String too Large
The message resource is present but the message was not found in the message table
 
Another sample of the error:
 
The description for Event ID 0 from source nvlddmkm cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
\Device\Video3
Error occurred on GPUID: 100
The message resource is present but the message was not found in the message table
 
 
I guess the only option now before thinking of breaking the loop and testing 4090 on another PC is to try windows 10.

I did not try to roll back the driver. This issue is there since older drivers as well. But it's just becoming worse now. And Yes each time I install new drivers I use DDU in safe mode. I have SuperNova 1600W T2 PSU. I tested with HDMI , same thing. I felt no difference. When it works it just works. It feels like the GPU has to "warm up" in order to play games normally. For example I have to restart a couple of times before I can play for longer gaming sessions without having flickering issue. The screen will just turn black for like a second then displays image again. If this happens while playing a DX12 game (for example BF2042) , it will just go to desktop but the game will still be running  in the background and plays normally when I maximize it after that. If the flickering happens in a dx11 game , it will switch to windowed mode. after that if I tried to lauch a any DX12 game, it will not. It will only launch after a restart. However for DX11 games, it runs fine. Sometimes it will just flickers at desktop while browsing or moving between different apps.
 
I really can't tell if it is a hardware issue or some really weird compatibility issue with something. I am still confident that if it was a hardware issue, games /benchmarks will just keep crashing regardless of it being a DX11 or DX12 game. Furmark full load and drawing 450+ Watts , no issues at all and no crashing.

I understand. It is really frustrating even more if you have a custom full loop. makes it impossible to troubleshoot without breaking the loop. It was a bad decision to go full custom loop. anyway back to the our topic,  I have Z790 Dark KingPin with 1.15 beta BIOS. Maybe this could be one the reasons ?! I truly don't know. I did all the possible stress tests CPU/RAM/GPU and it always passes the tests. If tests were failing then I would understand there could be a possible hardware issue. but all tests pass. What are your specs anyway ? Can you share the link to your discussion ? My specs are:
 
Inel 13900KS (changed frame with Thermalright frame)
Evga Z790 Dark KingPin
G.Skill 64 GB 6000 MHZ
Evga SuperNova 1600W T2
Zotac 4090 AMP Extreme AIRO
Cablemod 600W 12VHPWR 4x 8-pin cable
Full EK custom loop (CPU Block, GPU Block, Rad/Res/Pump)

I did see the issue happen with 4090 (before installing waterblock) while I was using it with my old Z390 Dark rig. The only common components moved from old rig to new rig, is PSU, Monitor, peripherals and windows 11. Everything else is new. I really got frustrated from all the troubleshooting and I don't want to break the loop. I had the loop built for me at a PC store. So I will just live it with for now hoping it is an issue with windows updates /drivers , etc. So either it will fix it self by time or just completely be unusable and then I will consider breaking loop and taking it to the PC store to check components thoroughly.
 
For now thanks to all for your suggestions.

What other software (aps) are running in the background .... software that you added to the OS specifically?
 
Good read, not sure if you have already seen these:


How to fix display flickering on Windows 11 | Windows Central
 
 
Options to Optimize Gaming Performance in Windows 11
Options to Optimize Gaming Performance in Windows 11 Microsoft uses virtualization in Windows 11 for scenarios including Hypervisor-protected code integrity (HVCI), also called Memory Integrity, and the Virtual Machine Platform (VMP). VMP provides core virtual machine services for Windows.


How to Enable Hardware-Accelerated GPU Scheduling in ... - How-To Geek
Feb 1, 2023On Windows 11, navigate to Settings > System > Display > Graphics > Change Default Graphics Settings and enable "Hardware-Accelerated GPU Scheduling." Windows 10 and Windows 11 come with an advanced setting, called Hardware-Accelerated GPU Scheduling, which can boost gaming and video performance using your PC's GPU.