Second graphics card causing hard crash

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danfaulknor

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#270147 25-Apr-2020 13:51

I've just added a second graphics card to my PC, so that I can run a few extra displays. So now I have a GTX1060 and a GTX1660.

I can fire up my PC with 3 DisplayPort screens connected to either card, but as soon as I connect just one DisplayPort screen to the non-active card, my PC reboots. If I leave that extra display connected, I get a CRITICAL_SERVICE_FAILURE BSOD, in a loop.

Even starting with just one screen connected to each card results in this.

I upgraded my PSU to 1KW, so I don't think it's a lack of power...

Does anyone have any ideas?

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ratsun81

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#2471166 25-Apr-2020 15:53

Ive not heard of anyone ever trying a setup like this.

I think that you will run into issues with this setup, mainly because a lot of the development for multi GPU setups is geared around having 2 identical GPU's.

What i do know is that Windows will use the processing power from GPU A,B or C and output it to the primary display device. I suspect this is why when you try and plug in monitors to not the primary GPU it gets upset.

Ive never tried this sort of setup and im only guessing here....

You could try DDU and remove all drivers and install from scratch, but i really dont think have 2 different gpu architectures is going to play nice.

The better option would be doing Displayport multi streaming.

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richms

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#2471169 25-Apr-2020 15:57

Not tried with cards that new, but a 970 and a 1050 were perfectly happy together when I wanted more screens.

I would also check for bios updates for the cards, and the system bios too. I know that some people had issues when some video cards were on the CPU and others on the chipset PCIe a while back, but I think that was isolated to crossfire/sli configs not just separate display adapters.

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danfaulknor

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#2471172 25-Apr-2020 15:59

Unfortunately, my (brand new) displays don't support DisplayPort chaining and I suspect any GPU that's a reasonable price won't support the total resolution I need.

However, one BIOS update, driver update, card firmware update and firm re-seating of all parts, and it's working! Though I haven't rebooted yet since plugging the displays in one by one.

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richms

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#2471173 25-Apr-2020 16:05

Display port chaining only sucks slighlty less than MST hubs for not working properly. I had 2 dells with that and many times I was doing the get on the floor and unplug and replug the cable to get both of them working. Were low res 1080 screens so able to do it. Got a MST hub hoping that would be better and the result was often no picture instead of 1 picture. Power up order was critical to correct operation and screens not swapping over. Whereas all direct to the computer they always are in the right place nomatter what order I turn the screens on.

Chaining has pretty much gone away now since most screens are pushing the limits of what displayport can do unless its the new versions and since corporate PCs are always lagging in tech they would have low FPS using chaining. 30Hz display gets people complaining that their mouse is broken.

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ratsun81

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#2471175 25-Apr-2020 16:08

Ok well im kinda surprised it works. but i guess im thinking in the bad old days of incompatibility.

Glad it worked out though and also curious what you needed so much resolution for? and how much you got in the end?

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danfaulknor

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#2471176 25-Apr-2020 16:14

I have my two "NOC" displays on my main PC now, rather than having to have a separate one. But for daily use, I have 4x 27" QHD screens. I also use 5 screens when I'm running live streams for various things (in-person events that are now online) which usually looks like:

1 - Zoom gallery view (For manual spotlighting) + Chat + Participants List. Voicemeeter Potato (for audio mixing inside my PC)
2 - Zoom speaker view (captured by OBS)
3 - OBS + Music playback
4 - Projector output from OBS so it's clear what's going out on the stream
5 - Other media, such as a presentation or video, also screen captured into OBS

Happy to be rid of the USB graphics cards I was using before as they were limited to 1080p

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richms

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#2471183 25-Apr-2020 16:21

Ah right, USB graphics card. Those drivers were probably the cause of your problem. I had no end of problem with those. Took a total annihilation of nvidia stuff and reinstall to get rid of them enough for solidworks to open again.

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danfaulknor

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#2471185 25-Apr-2020 16:25

richms:

Ah right, USB graphics card. Those drivers were probably the cause of your problem. I had no end of problem with those. Took a total annihilation of nvidia stuff and reinstall to get rid of them enough for solidworks to open again.

Now that you mention it, it was after I unplugged it that everything started working...

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#2471326 25-Apr-2020 22:30

ratsun81:

Ive not heard of anyone ever trying a setup like this.

... but i really dont think have 2 different gpu architectures is going to play nice.

Support for this sort of config has been around for some time. With DX12 you can even in theory run an NVIDIA and an AMD card in the same rig, although I'm not sure how many people do in reality.

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#2471343 26-Apr-2020 01:06

danielfaulknor:

I've just added a second graphics card to my PC, so that I can run a few extra displays. So now I have a GTX1060 and a GTX1660.

I can fire up my PC with 3 DisplayPort screens connected to either card, but as soon as I connect just one DisplayPort screen to the non-active card, my PC reboots. If I leave that extra display connected, I get a CRITICAL_SERVICE_FAILURE BSOD, in a loop.

Even starting with just one screen connected to each card results in this.

I upgraded my PSU to 1KW, so I don't think it's a lack of power...

Does anyone have any ideas?

Have you got a dump log?