Constant Crashes - Failed to present D3D11 swapchain due to device removed.

My Unity 2020.1.8f1 crashes constantly, albeit randomly. Every few days. This is typically when I am doing a lighting burn on a level (various sizes and complexity) or using a procedural level generation tool (I use both CityScape and CityGen3D). It is getting annoying, and I am losing a lot of time rebooting to clear the RAM and redoing my lost work.

Error PopUp:


Other than abandoning my paid for toolset, or not doing lighting burns, what course of action does unity offer?
mark

 

This can happen if something occupies the GPU for too long (I think the default is 2 seconds?). Windows will think something has crashed and try to reset the graphics card/drivers to keep the computer running. It is not uncommon for graphics tools like lightmappers to accidentally trigger this.

You can read more about it here: https://docs.microsoft.com/en-us/windows-hardware/drivers/display/tdr-registry-keys . The relevant registry key is "TdrDelay". Try increasing that to something like 10 and see if that helps.

 

Thanks @bobisgod234.

 

Hi, have you found a solution to the problem? I just updated the drivers for the video card today and now I have the same error.

UPD:
Downgraded video-driver NVIDIA GEFORCE to the old version (456.71 → 440). Personally, it helped me. Everywhere they write different things, someone was helped by reinstalling Unity, someone was disabling Windows Defender.

 

I had the same crash 5 times over the last hour, getting worth and worth over the days !!!
The TdrDelay trick didn't worked

 

Did this work for you? I'm, having the exact same problem and can't fix it.

 

I'd really want to know too, and @Delvarn if you find a solution, please write it here. Thanks!

 

Sorry, I wiped my hard drive and re-installed. I haven't had the same issue since.

 

I read somewhere that it might be related to having too many polygons in the scene and I just had the same crash again, with literally one cylinder and 6 humanoids on it...
TdrDelay didn't worked, nor Nvidia settings, nor the 2020.1.13f1

Windows 10, Unity 2020.1.13f1, Unity Hub 2.4.2, good PC i7, 32Go Ram, 1080Ti... never had the issue before 2020.1 WTF Please fix this !!!

 

Migrated project from Unity 2019.3.15 to Unity 2020.1.13 and this error appeared out of nowhere. Just why?

 

I have this Error as well and I can reproduce it:
I have a SceneEditor- and a Game-Window open directly next to each other. When I move the seperator-line between them (so I change the size of both), this Error occures every time after a few seconds. It's nothing you need to do for several seconds at all, but I thought, I post it here for debugging reasons, since it's really reproducable, I tested it for about 6 times.
My scene is not very complex.. a Terrain and some objects, maybe 10-15 lights.

 

In my case it was antivirus, so try to turn it off and reinstall Unity 2020.

 

Problem solved! just update to the latest nvidia graphic driver.

 

2020.1.4f1 same issue, Nvidia driver 457.30 on GTX 970. I'm suspecting the nvidia driver as I updated it recently and I've been using 2020.1.4f1 for months with no issues, have never had this error before updating driver.

 

It crash all my day...Using Unity Hub 2.4.2, 2020.1.15f1,2020.1.14f1. Nvidia driver 457.30(latest ) on GTX 950. Pls Fix It

 

Someone managed to get some solution. I have a Samsung Odyssey notebook with Geforce 1050 gpu. NVIDIA 457.30 driver. I've done everything, downgraded the driver version, already changed the TdrDelay. But the problem remains. Using Unity 2020.1.8f.

 

Same here, random crashes and work lost, 2-3 times per day. Unity 2020.1.16f1, geforce 1660, nvidia drivers 457.71.

I was on older driver when the problem started, and updating didn't help.

 

Yup, moving the separator line between game and scene window is guaranteed to cause the crash for me. Though I have gotten it sometimes in play mode and sometimes when just doing stuff the editor. Updated to the latest Nvidia Graphics Driver and still getting the error. Don't have an antivirus.

Unity 2020.1.16, URP
Win 10, RTX 2070 Super, Ryzen 9 3950x

Update (things that seem to fix the issue for me):
Not having both the game view and scene view open at the same time when moving the separator.
Disabling HexPlanet GameObject (recently bought (https://assetstore.unity.com/packag...net-pro-spherically-tiled-world-builder-65466)). It has 2.8K triangles total spread over 162 child GameObjects and accounts for 640 batches and 5 SetPass calls. Not sure if this should be enough to "Occupy the GPU for too long."
Those meshes mentioned above have mesh assets generated through script. Changing the mesh assigned to all the mesh filters to any mesh asset located in the project stops the error from occurring.

 

Since this problem started, our builds have begun to "hang" randomly. Similar random frequency than the error in editor play mode. Anyone else?

 

I'm having the random swapchain crashes since Unity 2020 two to five times a day. Very frustrating.
It happens randomly when changing code and then starting the game.
But once it started, it doesn't crash for the current playsession.

 

If only some Unity support representative showed up in this thread... it's obvious there's an issue that isn't our fault.

 

i just got a 3060 ti and updated my drivers, and suddenly i cant even load unity, even on a blank project! Am using 2020.1.15f1

 

Any update on this? About to swap my 2070S for a 3080. That would not be good at all.

 

I have the issue as well in 2020.1.16. TdrDelay and firewall exceptions doesn't work here either!

 

If this might help someone; Had the same issue, constant crashes in Unity 2020.2.1f1, with silly small scenes in a fresh install. Managed to fix it (toi toi) by uninstalling the Nvidia Geforce Experience that came with my 3070. No crashes since.

 

I just deleted the library, fixed the problem for me

 

The library folder in the project?

 

Yes.
It's a go-to fix. So very often (especially after upgrade) it fixes stuff like: Missing Monobehaviour, Messed up UI etc.

 

please I need help

 

HI guys,
I was getting this same message. Actually, even prior to getting that message, my unity would crash and I would have to restart UNity. FOUND THE SOLUTION TO BOTH ISSUES:
I have an NVIDIA GETFORCE GTX 960...so I uploaded the most current drivers from nvidias driver site and now everything works - no more f'king crashes ! So, i have to thank some of you guys who had made the suggestion of updating to the most current graphic drivers.

 

Had this problem with 2020.2.7f1 release (was not happening with the 2019 LTS version)
I was using NVidia 460.89 drivers with the 2020.1, updated to current 461.72 (as of this day) and it seemed to stop
(NVidia GTX 1660 Ti, intel i5-4570S)

 

Hey has anyone figured this out for sure? I am having this issue now as well...

 

I've tried making a whole new project in New LTS 2020 and 2019 and am still having this same crash with nothing even in my project.

 

And I've also tried ever solution currently listed on this page.

 

its mid march and this is still happening. I cant continue with this. I was really close to replacing my Graphics card, as everything else works.... but I cant afford that. Ive started to consider that Unreal is a more stable product and platform to developer for clients, with slower releases, but they are tested. Im tired of us being the test bed for new Versions. 2019 worked really well, now.... well it doesnt.

 

Had the same issue for quite a while and was able to resolve it by deactivating the SVT mode in my UEFI. At first I had the Nvidia driver in mind as a culprit, but doing all the things mentioned here in the thread did not resolve the issue.
For about 7 days now, I never had that issue again after disabling cpu svt (virtualisation). (Ryzen5 5600, Gigabyte B550)

Maybe it helps others.

 

This issue has only started to pop up with Unity 2020, so it is clearly due to something Unity changed, not GPU drivers or submitting excessive workloads to the GPU. I even have it occur during shader compilation at times.

Unity seem to be putting all the blame on the user/OS/GPU/Drivers, when it's clearly only an issue that has started to pop up after upgrading -Unity-.

I've had this occur with very simple compute shader workloads that complete in under 1ms, there's no way they could possibly be triggering the TDR. (They also only started becoming an issue when I upgraded)

Examples of the problem only appearing since Unity 2020:

Unity 2020:
https://answers.unity.com/questions...1-swapchain.html?page=2&pageSize=5&sort=votes

Unity 2020:
https://answers.unity.com/questions/1771258/failed-to-present-d3d11-swapchain-due-to-device-re.html

"Unity 2020"
https://forum.unity.com/threads/rep...fferent-errors-i-cant-report-any-bugs.954333/

 

Because Unity does 3 parallel releases without testing even the extreme basics of any of them

This is really getting out of hand, why cant they focus on making just one version that works

 

Indeed, appeared to me just after port to 2021

 

But this did not happen prior to 2020 unity, so is something that was changed between versions

BTW, i try to use a project i have in an Intel NUC with Iris 655 GPU and just cant, i used 2018 latest version and had a severe issue where the interface would just get stuck and mouse not press half the items in the unity screens, only the top menu is pressable, so have to kill Unity.

Then tried 2019 latest and had it crash 4 times during initial conversion without any reason.

Then 2021 which did convert and has this DX11 issue, note that 2018 was the only one that did work fine, until it got bugged in GUI few minutes after operation.

At first i was frustrated, now i just have a nervous laughter at this experience.

I did check and have the latest GPU drivers too.

 

problem fixed here :

 

That is great to know it works that way, though should be fixed so can use both cards as is the normal operation, hopefully in next versions will be handled properly as well, this is a great way to keep working though, will check asap

 

I keep getting this error everytime i boot up a project.
I have ONLY the unity window opened
And replacing,uninstalling and updating the graphic cards isn't an option

 

I've been having this issue when my game scene gets a little busy (2020.2).
I 'seem' to have fixed this (the game now gets past the point it would previously crash - but more testing is needed to be 100% sure) by turning off the Resolution & Presentation setting: 'Use DXGI Flip Mode Swapchain for D3D11'

Hope that helps someone out there!

 

The only thing that worked for me was a system restore point I luckily had the day before the accident.
I was working with 2019.4.25f1 DX11 version at the time.
I have switched to UV Charts option which I believe caused it to crash due to having a lot of objects and light sources in the scene.

Some of the solutions I tried:
Disabling one graphic card worked but not optimal.
I tried deleting the library folder but didn't work.
I updated the drive but didn't seem to do anything at all.

I was going to try using a driver uninstaller to completely remove the drive and update it again if the system restore point didn't work as I have seen a similar issue solved like this, so if nothing works might try this one out.

I didn't try turning off the resolution & presentation setting, that might have worked too.

 

I tried a number of options including updating graphics card drivers and changing TdrDelay value.

One thing that worked for me is:
In the list of Projects shown in Unity Hub, press on the 3 dots at the right of the project name
Press 'Advanced Project Settings', an empty text area should appear.
Type: -force-d3d12
Press Done and open the Project

It started working for me but at the bottom of the editor, it constantly shows
'd3d12: Profiler is enabled, but stable power state is not. GPU timing errors are expected.'

I shall update here if I face any further issues.

 

I haven't found a solution for this yet. Lately, it's been happening when I have Photoshop open at the same time with large files loaded (2GB+).

 

Windows 10 desktop
RTX 2060 6GB VRAM
4K monitor