• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

SLI option not showing up. I thought Nvidia drivers 'just worked'

Physx tab appears fine. NCP recognises both, and I can assign each to Physx, but nothing SLI wise.

I've also tried the 257.21 (I think) drivers to no avail.

I've tried the older card in both slots individually with the display, and the newer card in either slot with the display, and both work fine anywhere. Both together, I can switch the display between each card and that works fine. It's literally just SLI that doesn't work, which points to the SLI bridge, but if I don't have the bridge on, it should still show SLI as an option in NCP, but it doesn't...
 
I'll see if Rroff can come up with anything for the new driver, then I'll go the driver sweeper in safe-mode route, then if all that fails, a new SLI bridge, then a reinstall of Windows (really don't want to/shouldn't have to)...
 
Overslop said:
Dodgy SLi bridge perhaps?
Click to expand...

Can still use SLI without the bridge just not as fast.

Marvin said:
Have tried without an SLI connector and still nothing...

I really don't want to do a reinstall of Windows...
Click to expand...

Re-install Windows fixes many unknown problems sometimes!

Robert said:
Not sure if it's been mentioned but perhaps a dodgy PCI-E port is to blame? Have you tried both sockets individually?
Click to expand...

Good idea, also looked at any recent BIOS updates or fixes?
 
NathWraith said:
Can still use SLI without the bridge just not as fast.

Re-install Windows fixes many unknown problems sometimes!

Good idea, also looked at any recent BIOS updates or fixes?
Click to expand...

Got latest BIOS (updated earlier today after initial problems) but none of the releases mentioned an SLI or Crossfire fix.

I know a reinstall tends to help compatibility, but the install isn't that old, only 2 months or so...
 
Had a look but latest drivers don't have any easy to use functions from the commandline for multi GPU stuff would need to code something.

Have you tried uninstalling the drivers, rebooting with just 1 GPU in, installing the drivers, shutdown and then adding the second card? bit of a drag just to check :S
 
Rroff said:
Had a look but latest drivers don't have any easy to use functions from the commandline for multi GPU stuff would need to code something.

Have you tried uninstalling the drivers, rebooting with just 1 GPU in, installing the drivers, shutdown and then adding the second card? bit of a drag just to check :S
Click to expand...

Yeeeees. Unfortunately it's just occurred to me I've spent approximately 5 hours this afternoon installing, uninstalling and generally ****ing around.
 
Under the view menu in the nv control panel do you have advanced ticked and in the define custom view option nothing has been changed to hide the SLI stuff?
 
To save some hassle could you install windows on another partition (dual boot) to try it then delete the partition if that makes no difference? Never tried this so don't shoot me if it's a stupid idea :)
 
Give this a go;

1 uninstall drivers in windows

2 install driver sweeper

3 go into safe mode and run driver sweeper

4 check NVidia Display and NVidia Physx

5 click clean

6 reboot normally

7 reinstall latest drivers and try sli again

I'm not usually a great fan of registry altering stuff but it sounds like something's not getting deleted, either that or a hardware limitation somewhere.
 
Another fix I found was to just install the graphics driver.

Leave out the multi screen, couldA and fizzX stuff if you can.
 
Rroff said:
Under the view menu in the nv control panel do you have advanced ticked and in the define custom view option nothing has been changed to hide the SLI stuff?
Click to expand...

Yup, and yup.

jigger said:
Trying some of the older Nvidia drivers might help fix the problem.
Click to expand...

Tried that already unfortunately.

Rroff said:
Could you get screenshots of both cards from GPU-z?
Click to expand...

Here:

Troubleshoot%201.png


As you can see, GPU usage of card 2 (which was the older card - I've swapped them round many times now) is always 0.

The only differences on GPUZ is the different Sub Vendors (Asus and Nvidia - Asus is the new card, Point of View the older, both reference design).

Marine-RX179 said:
Just curious...were you using the single GTX470 before, or have you intalled ATI cards with your current window in the pass?
Click to expand...

Was using one of the GTX470s already, for around 2 months now. Think I reinstalled at the time.

Troezar said:
To save some hassle could you install windows on another partition (dual boot) to try it then delete the partition if that makes no difference? Never tried this so don't shoot me if it's a stupid idea
Click to expand...

Before I resort to a new install, I'll give this a try.

Arcane said:
*snip*
Click to expand...

Done already I'm afraid.

jigger said:
Another fix I found was to just install the graphics driver.
Click to expand...

Never got any options to only install specific components.

Leave out the multi screen, couldA and fizzX stuff if you can.[/QUOTE]
 
Quick update.

Seeing as Physx apparently works, I tried Just Cause 2 with Physx enabled on the second GTX470. At no point though was it utilised, making me fear motherboard issues...
 
You must log in or register to reply here.
Back
Top Bottom