CREO clashes when laptop autohibernates/disconnected from screen etc.

Question

I am using Creo Elements/Direct Modeling Release 20.4 and Datecode20.4.3.0

If one of these situations happen, sometimes the CREO turns-off/dissapears (the window dissapears, as well as the icon in the taskbar) and all the work that has been done and it is not saved is lost. As the Windchill is still running, this are the steps we have to do: 
1. Close Windchill
2. Reopen Creo
3. Reopen Windchill
4. Reload the cad.
This has a long time consumption, as well as making us lose the work done.
This situation SOMETIMES happens when: 
1.  The laptop is disconnected from the screens
2.  The laptop is disconnected from the docking
3.  Laptop enters sleep mode or autohibernation

Here are the errors that I faced 
No warning. Only the icon of the CREO in the keybar dissapears, as well as the CREO screen.

der_Wolfgang · Accepted Answer

Thanks for the fine list of actions to take: I recommend to write those as a numbered list, which makes reading much more easier. ( I almost read ‘Creo 3’ and was about to point you to the other forum )

I am using Modeling for really long time. And I use ‘Suspend to disk’ every evening ( “C:\Windows\System32\shutdown.exe /H”) .. without any problem. Modeling is still alive the next morning after Laptop is switched on again. It sometimes shows a message that the license get lost (well that’s okay) . It takes ~30 seconds until it finds the MELS-server again and the already running Modeling has got it’s license reactivated and you can continue as when the break would have happened for just 3 minutes only.

That the Creo Elements/Direct Modeling window does disappear or the icon in the task bar.. does not happen to me.

Questions:

Is the Modeling Process = “SolidDesigner.exe” still available in the task manager?
- means: did it end, or is just the UI only vanished?
- if the process is still available: can you raise it using the task manager?
Where is the MELS running ? On your laptop?
What does the MELS page in the ‘Notification’ tab say about your Modeling License (look for your IP address in those information pages).
- when is the license released (or lost) resp. granted again (reading the MELS info page)
I sometimes do have a running WGM-Client+Modeling and change from home-office to company-office and back and force .. and don’t have such a kind of problem.
do you start the WGM Client (via the desktop icon) before starting Modeling, or indirectly by starting the WGM Modul within Modeling
- hint: I start it separately and sometimes it is up for 2..3 weeks with 15 times “shutdown /H” in between

DB@HuscoInt · Answer

Based on the behavior described, this appears more likely to be related to graphics or Windows device-state changes than a problem with the application itself. Disconnecting monitors, undocking the laptop, switching network adapters, or entering sleep mode can trigger Windows to reconfigure display, graphics, and hardware resources. Older CAD applications such as Creo Elements/Direct cant always handle these transitions, which can result in the application crashing without an traceback being generated.

Because the issue occurs when monitors or docks are disconnected, I would suspect updating the graphics driver or changing the display settings would fix the issue. Reviewing Windows Event Viewer and Reliability Monitor around the time of the crash may help identify whether a graphics driver or application fault is causing Creo to terminate unexpectedly.

The nuclear option would be to close Creo before undocking or unplugging monitors.

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