ERROR DX11BACKEND (25524): DX device removed. Reason: 0x887A0007

[dutchili]

I frequently get this error message in the log file, since April 25.
Currently on the latest released version, yet i still get this.

I experience that the VR images freezes, the sound continuous for a while and if i am lucky DCS writes this log entry. Sometimes the PC writes a mindump, sometimes i just reboots.

The minidump and eventvwr often point to nvlddmkm and i see event IDs 14 and 153 in the event log.
Happens with Quest 3 and Pimax Crystal light.

My friend have more crashes while loading / in multiplayer too, with various reaons.

Any help @BIGNEWY

[BIGNEWY]

please attach your dcs log and dxdiag we can look for clues. 

thank you 

[dutchili]

dcs.logDxDiag.txt There you go @BIGNEWY. Hope it helps

[sleighzy]

This error is normally indicative of GPU drivers issue. See https://www.digitalcombatsimulator.com/en/support/faq/startup/#3312253 for more info.

Use DDU to remove your existing video cared driver and install the latest one. (Installing an older stable 566.36 driver release may also be an option). Drop another log if this is still occurring following on from that. I'd recommend removing your mods as well to ensure you're testing this with a clean base, you can put them back afterwards.

This is an interesting error from the logs that repeats for this issue which I haven't seen before, a clean driver may resolve this. I'm assuming that you've made no other changes to other settings in your system, e.g. Nivida Profile Inspector, which could have triggered this? Potentially revert those as well.

Failed to NVSDK_NGX_D3D11_EvaluateFeature for DLSS, code = 0xbad00002, info: N

Your friend's issues are possibly completely unrelated so they should raise a separate issue and attach their logs and crash log zip to that.

Edited May 24 by sleighzy

[sleighzy]

The DxDiag report contains a number of LiveKernelEvent errors with error code 117. This is also indicative of corrupted GPU drivers based on internet references.

The DCS log analyzer also had the following to say about the DxDiag report:

Windows Error Reporting (WER)

Your system crashes with Bluescreens.

The following kernel-events have been detected: DPC_WATCHDOG_VIOLATION,VIDEO_TDR_TIMEOUT_DETECTED

• Remove any overclocking (including XMP).,
• Run SFC and DISM to check your Windows.,
• Check for any updates of your BIOS or chipset drivers.,

Application Errors

DCS.exe: c0000005 (d3d11.dll)

Generic Windows or Hardware Issues

• Remove any overclocking (including XMP).,
• Run SFC and DISM to check your Windows.,
• Check for any updates of your BIOS or chipset drivers.

For the SFC and DISM references you would need to open a command prompt as administrator and then run the two commands below, these are run separately and then restart your PC.

dism /online /cleanup-image /restorehealth

sfc /scannow

 

[dutchili]

@sleighzyththanks for the great tips. They are in line with the advised that I got from NVIDIA. I ran lhe log analyzer on the Ed discord and installed a very old graphics driver as advised. Now I can play for about an hour and 15 minutes before I need to reboot to do it again. @BIGNEWYit does not seem to be a DCS specific issue as I get the same issues with flight simulator as soon as I enter VR

[dutchili]

I have disabled core isolation. Flown more than an hour now on multiple flights (computer shutdown in between).

Edited May 26 by dutchili

[dutchili]

@BIGNEWYThis thread can be closed. The root cause was incompatibility between the Nvidia driver (regardless the version) and Windows 11 core isolation.