Resolve 12.5 crashes when it sees more than 1 GPU

DaVinci Resolve Studio v12.5.0.052
Windows 10 64-bit
Xeon E5-2697v2, 32GB of RAM
GPUs: 2 x Nvidia GTX 760 (both in x16 slots)
mobo: Asus Rampage IV Extreme (not overclocked)

Issue: When GPUs are connected with an SLI bridge, and SLI is disabled in Nvidia Control Panel, Resolve disappears from RAM without warning or error message when I click on anything in Media Storage Browser. (Removing SLI bridge does not solve the issue, but Nvidia Control Panel starts complaining about SLI bridge being connected incorrectly.)

Note: Resolve works fine when Resolve sees a single GPU only, i.e. if there's only one GPU in the system, or when SLI is enabled in Nvidia Control Panel.

Probable cause of issue: MSVCR100.dll (from Visual C++ 2010) crashes.

From Event log:
Error: (06/11/2016 09:47:21 PM) (Source: Application Error) (User: )
Description: Faulting application name: Resolve.exe, version: 12.5.0.52, time stamp: 0x57579522
Faulting module name: MSVCR100.dll, version: 10.0.40219.325, time stamp: 0x4df2bcac
Exception code: 0x40000015

Fixes attempted:
- Uninstalling and re-installing Resolve
- Uninstalling all MS Visual C++ redistributables, then re-installing Visual C++ 2010 by running Resolve installer which installs Visual C++ 2010 x86 and x64 versions
- Running SFC /SCANNOW
- Running DISM /Online /Cleanup-Image /RestoreHealth, followed by SFC /SCANNOW

I also verified both GPUs are in fully working order.

Apart from re-installing Win10 from scratch I'm out of ideas. Helpppp!

cheers,
.: petri

(edited to add "Studio".)

di you have the studio version?

di you have the studio version?

Ah, sorry, forgot to mention that. Yes, I have the studio version.

I guess I should point out the same version of Resolve Studio works pretty well on another PC which has two GTX 970 GPUs (bridge installed but SLI disabled) and runs Windows 7 64-bit. No Visual C++ crashes.

(The only odd thing I've discovered on the Win7 system is that there seems to be no speed advantage from using two separate, non-SLI GPUs instead of two GPUs in SLI... but that's a discussion for another thread.)

(See also: DaVinci_Resolve_12_Configuration_Guide.pdf)

I just look at the manual of your Rampage.

- Of course, provided you have installed the latest bios (?)
- Do the almentation is powerful enough? a rough calculation gives 475w / 500w. Minimum Supply >= 750w 80 plus certified.
(See website http://outervision.com/power-supply-calculator or other site)

- I could do testing:
- GPU1 slot 1 PCIE_X16_1 + monitor connection
- GPU2 slot 4 PCIE_X16_1/8_3
(Normally these two slots will switch to X8)

Especially no SLI bridge between two GPU cards.

slot 1 PCIE_X16_1 + slot 2 PCIE_X16_1/8_2A are for SLI => KO

If possible, power the EZ-PLUG/1 connector for GPU.

- 1st launch: go through the Go button on the motherboard to reset.
- Enter the bios
- Exit menu: load optimized default => exit

Launch windows:
Reinstalling the latest NVIDIA driver (which is the same for the 2 GPUs)

do the tests in Davinci resolve
to make last attempt bios reset and start again.
Or better, change the GTX 760 by a single more powerful GPU.

Hi Jean Claude,

and thank you very much for both your reply, and for the time you took to look into this problem.

(See also: DaVinci_Resolve_12_Configuration_Guide.pdf)
- Of course, provided you have installed the latest bios (?)
- Do the almentation is powerful enough? a rough calculation gives 475w / 500w. Minimum Supply >= 750w 80 plus certified.

Yes, I have the latest BIOS, and my PSU is easily powerful enough; 1000+ watts.

- I could do testing:
- GPU1 slot 1 PCIE_X16_1 + monitor connection
- GPU2 slot 4 PCIE_X16_1/8_3
(Normally these two slots will switch to X8)

The 760s are installed in slots 1 and 4, and operating at x16. Other slots are not in use.

Especially no SLI bridge between two GPU cards.

Sorry, are you saying I should *not* have the SLI bridge between the cards?

If I remove the SLI bridge, Nvidia Control Panel gives a warning message, claiming that the SLI bridge is installed incorrectly, and I should shutdown the PC immediately.

If possible, power the EZ-PLUG/1 connector for GPU.

I'll try that, thanks!

- 1st launch: go through the Go button on the motherboard to reset.
- Enter the bios
- Exit menu: load optimized default => exit

I think I'll try resetting BIOS only when everything else has failed.

Launch windows:
Reinstalling the latest NVIDIA driver (which is the same for the 2 GPUs)

I've done this several times :)

Or better, change the GTX 760 by a single more powerful GPU.

No money, no honey, no funny :/

I have just this weekend to install a 2nd GPU in my PC on an ASUS W10 x64:
- Slot 1 (PCIe_x16 / x8_1) a GTX 770 for GUI (only)
- Slot 2 (PCIe_x8 / x4_2) GTX 980 Ti to render
- Slot 3 (PCIe_x4 / x1_3) a BM 4K Extreme 6G
(The slot PCIe_x16 / x8_1 switch to x8 mode when the PCIe_x8 / x4_2 slot is used : OK)

My PC, control panel, I can see the 2 GPU and also DR.
No error message in the NVIDIA panel.

Do not bridge between the two GPUs for SLI.
(See what Peter Chamberlain said viewtopic.php?f=21&t=27748&p=193265&hilit=SLI#p193265)

I do not understand why Nvidia SLI indicates that the bridge is not installed when the bridge is not done.
There must be somewhere a parameter either in the bios or in windows.

As for the resettlement of Nvidia drivers, ask => Custom and above
select the "Perform Clean Install" check-box.


- Restart windows
- Do the tests

If it does not work :
- Windows boot in safe mode a time
- Windows boot in normal mode and check,
- IF KO, bios reset
- Enter the bios, Exit menu: load optimized default => exit

I have no other idea. Sorry.

Do not bridge between the two GPUs for SLI.
(See what Peter Chamberlain said viewtopic.php?f=21&t=27748&p=193265&hilit=SLI#p193265)

Peter's message does not say the bridge should not be installed. He only says Resolve does not use SLI. In the Nvidia Control Panel you can easily disable SLI even if bridge is installed.

- With bridge installed and SLI enabled, Resolve sees only one GPU in my system (and works OK).
- With bridge installed and SLI disabled, Resolve sees two GPUs in my system (and crashes).
- With bridge uninstalled, Nvidia Control Panel complains about bridge being installed incorrectly, and Resolve sees two GPUs in my system (and crashes).

There must be somewhere a parameter either in the bios or in windows.

I've searched for one, but haven't found any.

Thanks for all your help!

- have you As for the resettlement of Nvidia drivers, ask => Custom and above
select the "Perform Clean Install" check-box?
- MOBO PCIE lane switch is correct ?
- drivers for chipset/W10 MEI_V11.0.0.1155_20150709_WHQL_1.5M are installed ? audio ? Lan ?

- have you As for the resettlement of Nvidia drivers, ask => Custom and above
select the "Perform Clean Install" check-box?

Yes, I always perform a Clean Install.

- MOBO PCIE lane switch is correct ?

Yup!

- drivers for chipset/W10 MEI_V11.0.0.1155_20150709_WHQL_1.5M are installed ? audio ? Lan ?

First thing I did was check that all drivers are up-to-date.

I even reset the BIOS a moment ago, and it didn't help. There's only one thing I haven't tried yet: re-installing Win10 from scratch. *sigh*

Last recour before any reformat, try installing a GPU in slot 1 and the other GPU in another slot than is currently used. This will be 8x instead of 16x PCIe gen 3 but it is only 1-2% difference.
Sorry but I do not have the same motherboard, it did not easy to help more.

what i found out was that you have to dedicate one graphics card to graphics operations in the NVIDIA settings and the obther one for the GPU rendering.

with this setting it worked for me. sometimes this setting is reset from windows or nwhen installing a new nvidia driver...

i dont know if this works with 3 graphics cards too.

hope this helps...

I had the same problem (and when asking support just got a lot of comments about SLI being the devil, disabled or not) and my fix was downgrading to windows 8.1. Windows 7 also works. I'm not sure what the deal is, maybe some cards work, but my twin/triple GTX 680 4GB setup works fine in the 'older' windows versions and crashes in Windows 10. SLI should be disabled though, that can take a reboot. I was using 12.0 or 12.1 at the time.

I'm not sure what causes this, maybe DX 12 is too involved and messes with compute.

Last recour before any reformat, try installing a GPU in slot 1 and the other GPU in another slot than is currently used. This will be 8x instead of 16x PCIe gen 3 but it is only 1-2% difference.

I'll give that a go. Thanks!

what i found out was that you have to dedicate one graphics card to graphics operations in the NVIDIA settings and the obther one for the GPU rendering.

Is that done in the Nvidia Control Panel, or somewhere else?

I had the same problem (and when asking support just got a lot of comments about SLI being the devil, disabled or not) and my fix was downgrading to windows 8.1. Windows 7 also works.

I'm pretty annoyed with Win10 anyway (lots of programs that worked OK on Win7 crash on Win10) so have no problem downgrading back to Win7. (Windows 8.1 I won't touch with a 10-foot pole :D) )

Howeverrrrr... I had a technical issue with Resolve a while back, and called BMD about it. Their rep first wanted to know which OS I was using, and when I told them Windows 7, they said it's not a supported OS. In other words, they wanted to end the discussion then and there.

HI,

I understood that you have another PC with 2 GTX970 (unless I am mistaken). Did you try to install them on your Rampage. It's just to make sure it does not come GTX 760 GPUs. No?

I understood that you have another PC with 2 GTX970 (unless I am mistaken). Did you try to install them on your Rampage.

Hell no. That would require way more effort and time than I can spare