[FIXED]Black Screen

[spacy51]

Good idea to disable the hybrid SLI on my GX2, but still no-go.

 

I have no idea either. Maybe someone else with a multi-card or single-card SLI can try out VBA-M.

 

My guess is, that locking the texture fails with D3D as well as with OpenGL.

[gamerk2]

SOLVED

 

I have to go to the NVIDIA control panel and switch manually to single GPU mode, then restart. VBA works fine after that, and so does pSX and ePSEe.

 

Now for my next question, is there a way to switch this mode ONLY for a few applications without having to restart every time I switch?

[mudlord]

My guess is, that locking the texture fails with D3D as well as with OpenGL.

 

OpenGL doesnt involve texture locking. glTexSubImage2D renders the raw data to a surface, only updating what has changed since the initial glTexImage2D call.

[spacy51]

Still, I wonder why it doesn't work with SLI...

[gamerk2]

Its not SLI per-say, its hybrid SLI. The 9800 GX2 is really two 8800 GTS wired together on one board, so no SLI setup is needed. Whats really annoying, is that I can take screenshots from the emulators, so the data is there, but is not being outputed correctly. For all i know, is my moniters fault...

 

It seems most emulators have issues with this at the moment, but at least i can force the workload on only one card as a fix. Still, given the fact the this method of SLI is becomming popular for those of us who hate buying two cards and keeping them both updated, this issue might need to be invistigated more.

 

Can anyone running a 9800 GX2 or a Redean 3870 X2 confirm they have the same issue (i wonder if its just NVIDIA's recently bad driver support as well...)

[Squall Leonhart]

Create a Profile for VBA-M using nhancer, and set SLI to Single, its probably a result of an incorrect SLI Value

 

btw, it IS SLI

Hybrid SLI is a new technique altogether.

 

Hybrid SLI® technology, based on NVIDIA’s industry-leading SLI technology, delivers multi-GPU (graphics processing unit) benefits when an NVIDIA® motherboard GPU is combined with an NVIDIA discrete GPU. Hybrid SLI increases graphics performance with GeForce® Boost and provides intelligent power management with HybridPower™.

 

You can't blame Nvidia for this either, without specifying the SLI value it defaults to the SLI setting in the global profile.

 

And theres nothing to be investigated, unless nvidia suddenly decides to support emulators and create an SLI profile.

If anyone with SLI wants to get SLI working on the emulator, then they can do the legwork and create the correct value.

[spacy51]

@gamerk2:

 

Just out of curiosity, could you please try my SimpleD3D special build with SLI enabled?

 

http://vba-m.com/vbam/vbaotherbuilds/VisualBoyAdvance_SVN528+SimpleD3D.zip

[gamerk2]

I can't comment spacy, becuase now everything works with both GPU's on.

 

Here's what I know so far:

 

A: Got PC, startup info prior to windows login screen not shown on moniter

 

B: Most emulators can't display properly.

 

C: Switch to single GPU mode, moniter won't display anything for 3 restarts, then works fine (including windows startup information)

 

D: Switch back to SLI, everything works fine.

 

 

I've got no clue, but everything works now with both GPU's on. Wish i knew what happened though...If i break it again, I'll let you know how the simple build did though.

[spacy51]

OK, since it works now, it was most probably a driver/setup issue.

[gamerk2]

Not to beat a dead horse, i think I found where the problem was:

 

Control Panel -> Display -> Settings -> Advanced -> Troubleshoot -> Uncheck "Enable Write Combining"

 

Might be worth looking into; unchecking that option fixed a ton of issues ZSNES and Snes9x were giving me.