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 How to Reduce to ONE Core 
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3D Angel Eyes (Moderator)
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Hello everyone!

Unfortunately, the NVIDIA stereoscopic drivers are not compatible with most AMD and Intel dual or multi-core CPU setups. There has been some success, but nothing consistent.

If you follow these steps, you will be able to get your games to reliably work with the NVIDIA stereo drivers without facing the lock-up problem!

The issue is the CPU itself. You can only run it as a single core CPU until corrected stereo drivers are released.

1. Run MSCONFIG, and select the BOOT.INI tab.
2. Once there, selected ADVANCED OPTIONS.
3. Set NUMPROC to 1.
4. Reboot your computer, and you're in business.

If this works, you can set up a dual boot mode on your computer.

Regards,
Neil

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Tue Aug 14, 2007 12:27 pm
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Sharp Eyed Eagle!
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hiya,

That is the (dual boot) method I prefer instead of using nHancer or other but I have one issue I would like advice about...

Lately I've been booting and rebooting in single-core or dual-core mode alot and sometimes I forget which one I'm running. Is there an easy way to tell if I'm in single or dual core mode? Even in single, two cores show up in the Device Manager program. What I would really like is to have a different desktop wallpaper with each mode. That would be nice and slick. How can I edit a boot file to do that? I guess I could login as a different user for each mode and that should work but I'd rather not use two separate logins. Suggestions?

--- iondrive ---


Sun Mar 28, 2010 8:25 am
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One Eyed Hopeful
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Windows Task Manager should show only 1 core if you've disabled other cores.

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Sun Mar 28, 2010 2:11 pm
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Sharp Eyed Eagle!
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yup, thanks.

I figured it should be something simple like that. There's an option that says View>CPU History>One Graph per CPU. That does it. Verified. Still, I think I'll just drag a special icon to the top of the desktop when I'm in dual core mode and put it at the bottom when I'm in single core.

Thanks again.

--- iondrive ---

PS: fancier indicator options (like different wallpapers) are welcome.


Sun Mar 28, 2010 9:59 pm
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Certif-Eyed!
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Hi, I am planning on going with a Core2Duo Processor instead of my now current PIV. I would like to know how do you set a Dual Boot mode up that Neil had talked about???

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Fri Apr 23, 2010 9:13 pm
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Petrif-Eyed
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I can use the 162.50 stereodrivers so it was quite some time ago i done this. But as Neil pointed out:

1. Run MSCONFIG, and select the BOOT.INI tab.
2. Once there, selected ADVANCED OPTIONS.
3. Set NUMPROC to 1.
4. Reboot your computer, and you're in business.


You can edit the boot.ini yourself (windows set to show hidden and system files) with notepad.
And i recall having 2 lines with the op-system simply gave you a choice when starting the system which one to run. Simply copy that line and insert the numproc parameter. Like this:
Code:
;
;Warning: Boot.ini is used on Windows XP and earlier operating systems.
;Warning: Use BCDEDIT.exe to modify Windows Vista boot options.
;
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="WinXPPro Dual Core" /FASTDETECT /NOEXECUTE=OPTIN /USEPMTIMER
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="WinXPPro Single Core" /FASTDETECT /NOEXECUTE=OPTIN /USEPMTIMER /NUMPROC=1

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Sat Apr 24, 2010 12:18 am
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Nevermind I found it.. ;)

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Sat Apr 24, 2010 12:11 pm
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Sharp Eyed Eagle!
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How to NOT Reduce to ONE Core?

Yes, it's possible. Just recently I've gone on a little quest to find a driver I could use in dual-core mode so that I wouldn't need to reduce to one core at all and the results are in. The magic driver combo is 173.68 with stereo driver 162.50. It works good so far on my 7800GTX and if I don't report back here, it means I've had no problems with it. So if you have a 7000 series card or below with a dual-core AMD CPU, you can try this driver combo and see how it works for you. These are the other combos I've tried with the results:

7800GTX-185.20/162.50 - does not trigger glasses. Does work in multicore. Lasersight image scrambled.
7800GTX-177.83/162.50 - does not trigger glasses.
7800GTX-177.66/162.50 - triggers glasses. Dual-core works. Lasersight image scrambled.
7800GTX-174.74/162.50 - reboots computer when s3d enabled.
***7800GTX-173.68/162.50 - triggers glasses. Dual-core works. Good Lasersight image.
7800GTX-163.71/162.50 - triggers glasses. Does not work in multicore.

What I was looking for was a driver that...
a ) didn't crash in dual-core mode,
b ) triggered the shutterglasses, and
c ) had a properly functioning lasersight.

Regarding b.
If you are willing to forsake b and use ED-Activator instead, then you could use combo 185.20/162.50 but then I think you will wind up losing sync alot unless you're using interlaced mode or something. Hmmm, blue-line-code could be an option for some people but I don't see it in the output list for 162.50 even with ShowAllViewerTypes set to ffffffff.

Regarding c.
If you don't care about the Lasersight, then you could try combo 177.66/162.50.

Note that none of these drivers work regarding custom Lasersights. They all have the effect of no Lasersight visible when a custom Lasersight is selected. I guess an alternate way to get a custom Lasersight would be to edit the built-in Lasersight images in the proper dll. I'm pretty sure it's nvimage.dll but I think that probably crosses a hacking line and it's not that important anyway.

Bottom line:
Just use 173.68/162.50 and see how it works. I know they say not to use differing versions in your combos but it's working fine so far. Try at own risk.

http://www.laptopvideo2go.com/drivers/52

laptopvideo2go and 3dguru are my two main sources for drivers other than nvidia. They have way too many drivers to test. Please report if you find any better combos but we should probably start a separate thread for that. By the way, you can use laptopvideo2go's inf files to install various drivers onto your laptop if it has an nvidia chip that you wouldn't normally be able to install to. You can PM me if you need help with it. You just replace the inf file and do a normal install although there's some risk I guess.

bye now.

--- iondrive ---


Last edited by iondrive on Wed May 12, 2010 10:23 pm, edited 1 time in total.



Wed May 12, 2010 3:10 am
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Petrif-Eyed
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169.21+162.50stereo works fine for me with dual core. Later drivers banged out but obviously compability came back.

Maybe even the 162.18+162.15stereo works with dual core if i'm not entirely wrong. Had quite an amount of different issues with 162.15 though. My fave old school drivers are the (nondualcore) 91.31 combo or the 93.81 combo (special set of drivers i think).

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Wed May 12, 2010 10:31 am
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Sharp Eyed Eagle!
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OK, I made a note of it in case I want to try it someday. It looks like 162.50 is the highest stereo driver we can use though. I re-tried 185.20/162.50 and it has a scrambled lasersight too so I noted it above.

the acid test:
I think a good test for driver stability is to set StereoOSDEnable to 1 in the registry under Stereo3D and see if that works or crashes (reboots) your computer. 173.68/162.50 passes this test for my 7800GTX card. Fortunately XP is pretty good at recovering from crashes but normal people probably don't want to do these kinds of tests.

Thanks for the input,

--- iondrive ---

UPDATE: OK, well I didn't really mean to hijack this thread so I will continue it here:
viewtopic.php?f=60&t=2610&p=20034#p20034


Wed May 12, 2010 10:33 pm
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