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PMDG 747, 737 Freeze - Research Results

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I thought I would post this to help anyone else that might be having a similar issue. Anyone that knows me knows I am famous for my long hauls. Recently in a flight in the 747-400 flying from PHNL to TNCM which is about 10.5 hours my computer Froze up when I was near KIAH. So the next day I flew the very same flight and to my surprise it froze up about the same place near KIAH.

 

Originally my thought was there was a problem with the scenery in this area but I could not track it down or find anything amiss. So after that I just flew from PHNL to KORD and made it without any problems. I then flew down to KIAD and then from there over to OMDB. (All in the 747-400). After OMDB I tried to fly the NGX from OMDB to VRMM but the computer froze up again about an hour and a half after Departure.

 

At this point I knew something had to be wrong because I have flown Thousands of Hours in the MD-11 and 747-400 and hundreds of hours in the NGX doing long hauls all over the world without the computer freezing. I'm talking about 14-17 hour flights in the Heavies and up to 7 hours in the NGX.

 

I finally remembered that recently I had updated Nvidia Inspector to include the Frame Rate Limiter and it was set to 30. Once I removed this frame rate limiter the Freezes stopped completely. The normal way I do things is to set the FSX FPS limiter to Unlimited for approaches and takeoffs and then when above 10,000 feet I lock it down to 30 fps. This has always served me well and I have been able to do all those long hauls without a hitch.

 

So if you already have the uiautomationcore.dll fix done and are still experiencing a freeze in the middle of your flight you might want to disable the FPS limiter in Nvidia Inspector and just use it in FSX in stead and see if that is the cause of your Freeze.

 

Note: This is not a temporary Freeze, its a totally Freeze where you have no other option but to do shut down and reboot.

Paul Deemer

You know, the same thing has been happening to me lately, on about 1/4 of my flights. I too updated all the NVIDIA stuff. I will try this. Thanks!

~William Genovese~

  Boeing777_Banner_Pilot.jpg         KAB200_sig3.jpg

  • Author
You know, the same thing has been happening to me lately, on about 1/4 of my flights. I too updated all the NVIDIA stuff. I will try this. Thanks!

 

If the Freeze stops for you as well please be sure and stop back and let us know.

Paul Deemer

Good call Paul! I've been experiencing what seems to be the same issue you've described on my new rig, and I'm also using the frame limiter in Inspector. Will report back if this sorts out the problem.

Vincent Stuart

Senior Captain

BAVirtual

  • Author

Oh btw guys there is one other change I made that could be causing this freeze. Do any of you use VATSPY? Sometimes I leave it open for the entire flight. When I have a Freeze I usually leave it off the next attempt on that flight and the freeze doesnt happen. So I think its either Vatspy or the Nvidia Inspector FPS Limiter. Has to be one or the other cause without neither active I never have a freeze at all.

Paul Deemer

Paul,

 

I imagine you looked at all the other stuff to like Vcore to low if you have an OC on your processor? I found this was giving me freezes as well a while back.

Marc Lynn

  • Author

I had another freeze with the MD-11. So now I have had it happen to all 3 of my PMDG planes. I am starting to think it's related to my DVD drives and a lose SATA cable. I disabled my 2 DVD drives in Vista yesterday and did the same flight and had no problems.

 

Reason I think its the DVD drives is because a couple months ago I couldn't boot up the computer. Or had computer on and it froze up on the desktop. When I went to check the BIOS I saw one of the DVD models was showing some weird text in the Bios description for the Drive. After reseating the cables and making sure the connections were good the problem went away. I now think that when I am flying sometims the vibration from all the fans in my case is causing a loose connection with the sata cable and when that happens windows has a hiccup and freezes.

 

Will let you know the result of my test after I complete a few Long Hauls.

Paul Deemer

  • Author

I imagine you looked at all the other stuff to like Vcore to low if you have an OC on your processor? I found this was giving me freezes as well a while back.

 

 

Marc you might be onto something there. I did bump up the Vcore a bit and so far so good. I also had another problem with the computer today where it wouldnt boot up into windows. Since I had this problem before I went inside the case and checked the sata cables and sure enough the one for the Windows drive was just barely sitting in the socket. Finally took the computer outside and re-routed my sata cables and tied them down really good so they can not pop out again. Im willing to bet the freeze was either Vcore related like you said or possibly the sata cable plugs being loose. If I dont freeze in the next 10 flights I will know its fixed.

Paul Deemer

  • 4 weeks later...

You made 2 different topics claiming they both solved your problem!!!

  • Author
You made 2 different topics claiming they both solved your problem!!!

 

 

Forget everything you read above and use the link below. That was what finally fixed it. I thought I had the issue fixed awhile ago but it was not until I switched back to Ethernet that I actually got the problem solved. Sorry for the Confusion. If I could delete this thread I would have but I can't so thats why I posted a link to a new thread.

 

http://forum.avsim.n...finally-solved/

Paul Deemer

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