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SLI stopped working

Hockster

Hockster

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Sometime in the last week or so my SLI just stopped working. Both cards are detected. Both cards work in either slot individually, with either set of power cables. Upon starting a 3D application both cards clocks raise to 3D levels but then the second card drops back to idle clocks. Doesn't matter which card is in the lower slot, behavior is the same. I tried 2 other SLI bridges with no changes to the results.

There is no option to enable SLI in the NV control panel even though both cards are listed.

BIOS shows both slots operating at X8 speeds.

I've tried the last four sets of drivers, used DDU for each driver uninstall. Only software changes at all recently have been the few Windows updates.

I'm stumped.
 

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eidairaman1

eidairaman1

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Did windows get updated recently?
 
Hockster

Hockster

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E

er557

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you should re-install your chipset drivers, the ones more closely related to your chipset(check station-drivers intel inf, sort by date submitted), and choose the command switch -overall, simply add it to the setup shortcut. that might take a few minutes, after which you should have sli back. I recommend version 10.1.2.86
 
Hockster

Hockster

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Hadn't thought of that, I shall do just that.
 
Ahhzz

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Chipset is almost always a good idea when something's not being "drivered" properly. I fix so many issues just reloading or updating chipset. Good call, even if it doesn't fix this one.
 
Hockster

Hockster

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It didn't. Went back into BIOS and slot 2 is now being reported as operating at 0 speed. Top slot is at x8. Might try a BIOS reflash, but I'm starting to think the mobo is failing for some reason. One of the onbaord USB ports quit working now as well. I could be I pulled the connector while swapping cards around, but my cabling is pretty tucked away.
 
cadaveca

cadaveca

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be careful on reflash. only have one card installed, and minimal ram config, and be sure that CMOS is cleared before flash. Sometimes having non-cleared CMOS on ASUS boards leads to stuff staying disabled.

Also, check BIOS MEI version, see if it is blank.
 
Hockster

Hockster

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Will do, it's a tomorrow project at this point. Time to make dinner and Live PD is about to start :laugh:
 
eidairaman1

eidairaman1

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Hockster said:
It didn't. Went back into BIOS and slot 2 is now being reported as operating at 0 speed. Top slot is at x8. Might try a BIOS reflash, but I'm starting to think the mobo is failing for some reason. One of the onbaord USB ports quit working now as well. I could be I pulled the connector while swapping cards around, but my cabling is pretty tucked away.
Click to expand...

Check cpu pins even,
 
Hockster

Hockster

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System Name Project Neverending
Processor i9 9900K @ 5.0GHz
Motherboard Asus Maximus Formula XI
Cooling Corsair HX 150i Pro, Corsair ML 120/QL 120 fans
Memory 32 GB Corsair Vengeance Pro RGB 3200
Video Card(s) Asus RTX 2080Ti
Storage Samsung 970 Evo NVMe, 2 Samsung 860 Evo 1TB
Display(s) Acer Predator X34 (3440X1440), Samsung U28D590 (3840X2160)
Case Lian Li 011 Dynamic XL
Audio Device(s) Supreme FX X-Fi, Logitech 5.1 speaker system
Power Supply Corsair HX 1000i
Mouse Logitech G703
Keyboard Logitech G105
Software Windows 10 Pro
Benchmark Scores Updates coming soon ®
Fixed it.
Pulled the lower card and reflashed mobo BIOS. Everything works as it should. Even managed to set new personal records in Fire Strike and Time Spy. Still no clue what caused the issue in the first place though.

Edit:
Well, whatever the problem was it's back. Did some errands this afternoon and when I got home SLI was gone again. So I flipped my middle finger at it and went out again. Came home with these:

 
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