[*Unresolved* Issue] Alienware M18x: GTX 580M SLI DPC Latency Problems

[Dell-Bill_B]

FWIW, we made Nvidia aware of this based on what we learned by reading this thread.

[Mr. Fox]

FWIW, we made Nvidia aware of this based on what we learned by reading this thread.

You guys are totally AWESOME. We love you, Brother(s) Bill, Federico and Chris. So glad you're part of our community.

[skygunner27]

FWIW, we made Nvidia aware of this based on what we learned by reading this thread.

Thank you x's a googleplexian! I knew you guys had something to do with it.
I'm going to hold off for another 30 minutes on the prototype error. While I bask in all of the no dpc latency glory. + Rep!!!!!! And some people say Twitter doesn't work.................lol.

UPDATE:
After an hour and 15 minutes, latencymon picked up latency problems from Nvidia. DPC Latency checker is in the green. I just did a video conversion and the effects of latency aren't apparent. So I'm good. I'll just uninstall Latencymon...lol.

[bumbo2]

Wow that is a great news!, I'll try it when I get home from work.

[Mr. Fox]

Seems to work very well, did you notice any temp increases at all or anything else whislt using this fix Bro? - I will try the new WHQL driver later and see what gives with that......fingers crossed.

No increase in idle temps... everything is excellent. Combo of the P12/P8 tweak and the new Verde driver is outstanding.

[skygunner27]

Like I said before, the PS Vita PlayStation®Vita - Pre Order PS Vita System | PS Vita Games & Apps official launches on Wednesday. A lot of people are going to be looking for ways to convert .avi, .mkv etc.... to MP4 for the PS Vita. I personally can think of 5 M18x 580M SLI owner's that are going to run into DPC Latency on the M18x. It may take people a while to pinpoint the cause of video/audio artifacts during playback after a conversion. Through Google this thread is VERY easy to find. I know there's a problem, you know there's a problem, Dell knows there's a problem. It just makes sense to fix this for current and future owners in a timely manner.

Just in time for the PS Vita launch tomorrow!!! Yehaaa!!! Badaboom http://badaboomit.com/ and DVDfab AIO http://www.dvdfab.com/all-in-one.htm are both working perfectly with this new driver. No video/audio artifacts after conversion!!! Both of these programs are CUDA/SLI optimized.

Everything is going so well that I don't want to try 3D and ruin it.

[steviejones133]

FWIW, we made Nvidia aware of this based on what we learned by reading this thread.

Like others here, I kinda thought you guys had a part to play in resolution of this - I believe that WITHOUT your intervention, Nvidia may well have just carried on and left it unfixed.....Soooo, a HUGE thank you to all you guys over at Dell for taking the time to put this thread at Nvidia to get a resolution for us all.....

NBR & Dell = Great team!!

Thanks Bill & Co.

[bumbo2]

Excellent -excellent he-he!!!.

Excellent work dell team!.

[Mr. Fox]

A member of the NVIDIA Forums suggested something interesting that I might play with even though this appears to be fixed now.

Create a profile with option "Prefer max performance" for dwm.exe in Nvidia CP. That should be enough to keep your cards in 3D mode all the time.

FYI... this method works, too.



Simply creating a profile in the NVIDIA Control Panel for Desktop Window Manager (dwm.exe) and setting it to "Prefer Maximum Performance" instead of "Adaptive" keeps the GPU(s) elevated in the 3D state (P0) at all times. I like the batch file method better because the cards can still clock down at idle, but this will also work in a pinch. As you can see, temps are not a concern.

I tested this in hopes that it would allow running in P0 on battery for some battery-powered gaming, but no such luck, LOL.

[steviejones133]

Just a FYI here really....

Just got through installing the WHQL set and decided to check the latency for myself. I wanted to check out first running stock vbios (as I havent changed that yet) and without ANY foxfix for P-States......I just got through a solid hour of testing with LatencyMon and am happy to say that the "green" message of "your system is able to handle blah blah blah without dropouts" was still displayed after just over an hours worth of testing whilst playing music etc. - good enough for me to concur that the latency issue has been resolved....until Nvidia break their own driver again LOL.

Gonna go ahead and test out the same again but this time with the "foxfix" set just for P0 & P1 and see how that goes....then I plan on testing again with "foxfix" for P0, P1, P8 & P12 in place.

Side Note: I too prefer the .bat method, again Fox, great work....amazing actually!