FSDreamTeam forum
Products Support => GSX Support FSX/P3D => Topic started by: doublebubble on October 10, 2018, 12:47:02 am
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Hi, just wondering if there is a fix for the shaking that happens during pushback with the pmdg747?
Regards Rod
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See here why only PMDG can fix it, and they had all the required information from us to do it:
http://www.fsdreamteam.com/forum/index.php/topic,17264.msg121514.html#msg121514
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Thanks for the link Umberto, we sit in hope.
Regards Rod.
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I got this response from one of their support team from the ticket email
"We provide an SDK which can be used to simulate proper push back behavior. It's up to the 3rd party developer to use it to properly interact."
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Mmmm, don't wanna start a he said she said, sort of go a similar response to a post placed on the other forum, just had a push back 747-8 from wsss, it terrible, nearly shook my teeth out.
Regards Rod.
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I just don't understand why the shaking only occurs on the PMDG 777s and 747s, this issue isn't present in the NGX
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If you have rudder foot brake pedal, apply gentle pressure and release it immediately. The shaking will stop.
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If you have rudder foot brake pedal, apply gentle pressure and release it immediately. The shaking will stop.
That didn't work, although I did find a little work around, I noticed if I kept the parking brake on during pushback, the vibrations stopped, but this is unrealistic
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"We provide an SDK which can be used to simulate proper push back behavior. It's up to the 3rd party developer to use it to properly interact."
Well, we might just say the same about GSX.
We do provide documentation for 3rd party developers to prevent issues with GSX pushback, and it's up to them to use it and properly interact with it, to prevent problems that only customers of their airplane are experiencing, that doesn't happen with any other airplane, either because it doesn't have this (whatever it is) system that is causing this, or because the airplane developer did the right thing, and used the GSX documentation, which clearly explains how to prevent it.
Instead, the PMDG SDK mostly covers ways to trigger all switches in the cockpit, and ways to read the CDU content. I couldn't find anything in it that seems to be related to pushback, and not even an explanation of what might causing this.
An helpful reply from PMDG would have been something like this:
"Yes, it happens because the airplane simulates the auto-steering-computer (I'm making this up!!), which everybody knows must be turned off before pushback so, it's enough they turn it off when pushback starts, and it will be fixed".
If they said so, we might have used some command in their SDK to turn off that thing, something that you could probably do it yourself as well, since all custom events in their SDK are related to some switch you can operate in the cockpit.
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I just don't understand why the shaking only occurs on the PMDG 777s and 747s, this issue isn't present in the NGX
Because whatever custom PMDG-made system simulation is causing this on the 777/747, is not there on the 737. If they said *what* is this, we might at least try to see if it was possible to turn it off using their SDK.
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Unlike Umberto, PMDG have a strange approach to fixing stuff like this sometimes !
Might be an idea to pester them again on their forum to help FSDT resolve it
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I got this response from one of the teams at pmdg
"The issue needs to be addressed by the GSX Development team by using the SDK we provide to all developers to interact with our software. All other add on software and hardware developers use this without issue so I'm not sure why the GSX Team has chosen not to do so."
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Here's another response I also received in regards to the 777s, 747s, and NGX
"They are completely different systems with different code in each plane."
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Here's another response I also received in regards to the 777s, 747s, and NGX
"They are completely different systems with different code in each plane."
They still haven't answered WHAT is this unique system that needs to be turned off during pushback, using their SDK, as they suggested in the previous reply.
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I have to say I have PMDG 737, 747 and 777 that are the only aircraft I fly and have never encountered this problem. Just saying. Very curious.
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I have to say I have PMDG 737, 747 and 777 that are the only aircraft I fly and have never encountered this problem. Just saying. Very curious.
Have a look at this thread on Avsim:
https://www.avsim.com/forums/topic/505838-is-pmdg-going-to-work-with-fsdt-to-integrate-gsx-pushback/?do=findComment&comment=3587873
This issue has been solved! Here's what I found that fixed it for me:
Go to your C:\Users\USERNAME\AppData\Roaming\Lockheed Martin\Prepar3D v4 folder
Open cameras.cfg
Under [CameraDefinition.002] (this should be the Virtual Cockpit cam), set MomentumEffect = No. Hit save and close. Now there's no crazy camera shake during push. The nosewheel and tiller animations are still wonky so I hope PMDG will work with GSX, but at least now I won't have brain damage every flight. For anyone having this issue, please try it out and let me know if it works!
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Umberto,
Any news about this issue? I have EZDOK v3 and each time I push back with my 747, I get a horrible shaking. I already have MomentumEffect=No in my CameraDefinition, so that does not solve the problem.
At the same time, I have also urged both PMDG and EZCA, but an agreement must be found and something must be done, because it's quite ridicolous that each of the 3 players passes the ball to the others...
Thank you.
James
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At the same time, I have also urged both PMDG and EZCA, but an agreement must be found and something must be done, because it's quite ridicolous that each of the 3 players passes the ball to the others...
Which "3 players" ?
Do you mean you only have the problem if EZDOK camera is enabled ? If yes, there's just one player, and it's clearly EZDOK, since the shaking you see is caused by some kind of special EZDOK effect, assuming you don't have it if you turn it off.
Or, do you mean you only have the problem with the PMDG, with the presence of EZDOK is irrelevant, and it doesn't happen with another airplane ? If yes, there's just one player, and it's clearly PMDG, since the shaking you see is caused by some special effect in the airplane.
As explained so many times on the forum, what you see is nothing we do from GSX, there's just nothing in the GSX code that makes the airplane or the view shake so, either it's a camera effect, or it's an airplane own effect. What GSX does, is simply write to the standard variables for the rudder the value of the steering, which allows the front wheel to steer together with the towbar, which clearly works for each and every other airplane out there, and it would be very unrealistic and bad looking if it didn't.
It's possible the airplane or any other 3rd party addon added any kind of custom simulation of something, and that might be confused and SHOULD be turned off when the rudder is moved by somebody else ( a Pushback in this case ), that's why we have a fully documented way for 3rd party developers to KNOW if GSX is pushing, so they can momentarily stop whatever simulation or effect they are doing, and this has been available for a while.
So, regardless if either the camera or the airplane are causing the shaking when GSX is pushing, they have all the tools and the information to fix the problem themselves. We, instead, simply CANNOT do anything from our side, and it's generally wrong if we tried to hack into a custom simulation of another product, we ONLY use 100% officially documented SDK access and variables, and stopped hacking into the sim long ago, since at least in P3D is no longer required.
Some developers, like FS Labs, Leonardo, Aerosoft, have all used one of these interfaces to be sure their users won't have any problems when using GSX. PMDG once promised to do that as well, but never came out with anything. Assuming, of course, the issue is in the airplane and not the EZDOK camera, which is not clear.