Fight-TDR-bug program

[USSR_Rik]

We still trying to catch Timeout Detection & Recovery (TDR) bug related to GPU freezing. Our statistics shows that it is absolute winner in our bugs hit parade.

 

This bug mostly happens among users and never happens among our testers and in test conditions. In our struggle with this ugly bug we are asking our users to help us to detect bug and send us information which is usefull for us to find the cause.

 

We prepared a special version of "dx11backend.dll" with additional logging especially for TDR bug. Users who experience frequent crashes and who can find "device removed" messages in their dcs.log can participate in our "fight-TDR-bug program". Download attached archive with DLL-file, unpack and replace your copy of "dx11backend.dll" in the DCS World\bin folder with downloaded one and try to reproduce the crash. File doesn't affect to Integrity Check procedure. You can use Open Beta or Release version for tests.

 

It would be better if you clear "Logs" folder before first run. In case of success, you should see some files with "TDR" in their names in the "Logs" folder. Send us those files as well as zipped logs. The more crashes you can reproduce the higher chance for us to find and fix the bug.

dx11backend.zip

[Worrazen]

Interesting, since I got many Device Removed crashes in the last month, except not with DCS but with Destiny 2, now that might be a clue in it self that it could be something external causing it, I did put a new AMD Drivers on around January 2019.

 

 

 

I have now:

18.50.03.05-181217a-337288E-RadeonSoftwareAdrenalin2019

 

 

I'll try it anyways maybe it can help with more clues.

[diditopgun]

Oh ! I see this sticky only now… my bad.

 

I wanted to try your DLL but it makes my game to crash (crash logs attached) at start up on DCS logo before accessing main menu. Maybe it is not compatible with latest DCS version anymore ?

 

Does this TDR bug is the one that cause crashes for exemple when switching external views between too much distant points of view needing terrain loading, especially on the heavy ressources demanding PG map ?

 

If it's this one (we are many waiting a fix since it appeared with 2.5.4 in december…) the problem is that it crash to desktop without crash message/crash log/track file.

[Raven (Elysian Angel)]

Yes I noticed it rather late as well, after posting many times in the threads about "flickering since 2.5.4"

 

I get this in my dcs.log:

 

2019-03-23 22:00:00.076 ERROR DX11BACKEND: DX device removed. Reason: 0x887A0006

2019-03-23 22:00:00.077 ERROR DX11BACKEND: failed to create structed buffer. Reason: DXGI_ERROR_DEVICE_REMOVED

2019-03-23 22:00:00.077 ERROR DX11BACKEND: CreateShaderResourceView FAILED. Reason: E_INVALIDARG

 

 

 

 

*edit*

 

 

 

Download attached archive with DLL-file, unpack and replace your copy of "dx11backend.dll" in the DCS World\bin folder with downloaded one and try to reproduce the crash. [...]

It would be better if you clear "Logs" folder before first run.

I did just that, but DCS won't even launch with this new dll, Rik. So I'm afraid I won't be able to participate...

 

DCS crashes shortly after "Getting autorisation data", before arriving to the main menu:

 

 

Edited March 23, 2019 by Elysian Angel

[Raven (Elysian Angel)]

The person who discovered this seems to be on to something:

 

 

I just did a flight of over an hour on the Caucasus map, without crash. Previously, DCS would crash after just a few minutes...

[iRocco]

so is this related with the F14 somehow? Cobra said they are working on a CTD.

[Raven (Elysian Angel)]

No, this is DCS related, since it happens with pretty much all modules.

[Dhorse]

Anyone else tried this?

What does those changes actually do?

 

 

The person who discovered this seems to be on to something:

 

 

I just did a flight of over an hour on the Caucasus map, without crash. Previously, DCS would crash after just a few minutes...

[MROK73]

The person who discovered this seems to be on to something:

 

 

I just did a flight of over an hour on the Caucasus map, without crash. Previously, DCS would crash after just a few minutes...

 

Sorry mate, but it happened again...no joy!!:no_sad:

Edited April 10, 2019 by MROK73

[MROK73]

And with the .dll it happened the same thing as with Elysian_Angel

[JagHond]

Hello, Rik.

Here as follows is my own little report, hope it is some way useful.

I installed that file in my DCS World and Open beta (updated to its last version released a few hours ago) both.

After that, DCS World crashed just after I started it, just as shown in Elysian Angel's pic.

On the other hand, after launching it, Open beta crashed at a sudden after no more than after one minute, but in the Logs folder I found shown three files, a .crash, a .dmp and a dcs text file, Nothing more or else.

 

With best regards.

[Raven (Elysian Angel)]

Sorry mate, but it happened again...no joy!!:no_sad:

Yup it seems the various "fixes" you can find all over the internet only work temporarily at best: in my case until I reboot my PC.

 

It's been getting so bad that I can barely do anything in DCS without crashes:

 

- I can't do anything in Caucasus for longer than a few minutes (jets/helicopters);

- Flying jets in NTTR and SoH is mostly fine, but when flying helicopters DCS crashes every time I get close to a city area (due to reflections off glass windows would be my bet). The screen starts flashing and after 10 seconds or so this happens:

 

 

I spent hours looking for fixes (including Registry edits) all over the internet, but none of them really fix it.

 

 

 

 

Can we have an update on how the search for this bug is progressing, please?

[anlq]

Guys, finally I found the cause of problem, that's overheating. DCS would crash anytime the GPU temperature over 72* Celcius. So I tried to cool down the Case, it works and I got no more crash.

[USSR_Rik]

Thanks for all, I'll open this thread when we will have any news.

[Baz000]

I think I am experiencing this bug when I run DCS in VR, and especially once overclocking my GPU and trying to run DCS... I'm constantly getting same dx11backend error in the logs too.

 

DX11BACKEND: DX device removed. Reason: 0x887A0006

[silverdevil]

I found a possible workaround. looks promising.