robert_e_bone
@Lunatech - is it possible you have not disabled Windows default behavior for selectively turning off idle USB devices?
 
You can check this in either the USB Hub Properties in Device Manager - you would need to set it for each USB hub, under Power Management in properties, OR you can check/set this under power options:
 
Control Panel>Hardware and Sound>Power Options> then choose the High Performance plan, then Change Plan Settings, then Change Advanced Power Settings, then expand USB Settings, then expand USB Selective Suspend and change to Disabled.
 
I am wondering if Windows is just severing the connection due to detected idleness.
 
Bob Bone
 

Hi Bob,
Yes, I have checked all of the settings.  Stopped using a powered hub, etc.. etc.. .. The only thing that has seemed to work consistently is when I had only one controller and it was connected with a midi cable. It does not happen very often, I just don't know when. I have seen some others have similar issues here and on other forums. I have tried updating the drivers, using the Windows driver took all the suggestions that I have seen. What's interesting is that windows device manager still thinks that it is functioning... go figure.  This is not at all a deal stopper for me.  If I am working continuously, it does not happen.  Thanks for the suggestion though....

Thanks for the feedback LunaTech!  I probably do have the Concrete Limiter on some of the busses as it is my go-to limiter.  I'm sure that it varies from project to project and bus to bus.  Are you suggesting that there might be a connection to the CL being there in the circumstances where I'm getting the crashes?  I'll have to be observant about that!.....
 
Couldn't agree with you more regarding the bakers.....X3c is a great product and I get a great deal of musical satisfaction using it.  I am also fortunate to have a high degree of patience when it comes to these little things that are "inconvenient".  They'll get it fixed in due time and I'll be thrilled about it!  In the meantime we work around this stuff and make our music.....it's all good!

cuitlahac
Thanks for the feedback LunaTech!  I probably do have the Concrete Limiter on some of the busses as it is my go-to limiter.  I'm sure that it varies from project to project and bus to bus.  Are you suggesting that there might be a connection to the CL being there in the circumstances where I'm getting the crashes?  I'll have to be observant about that!.....
 
Couldn't agree with you more regarding the bakers.....X3c is a great product and I get a great deal of musical satisfaction using it.  I am also fortunate to have a high degree of patience when it comes to these little things that are "inconvenient".  They'll get it fixed in due time and I'll be thrilled about it!  In the meantime we work around this stuff and make our music.....it's all good!

Hi Dave,
That is exactly what I am suggesting.  I corrected my earliest post where as I wrote CC when I meant to write CL (Concrete Limiter).  If CL is on a bus while the CV is undocked and on the 2nd monitor, working in the CV will lead to a crash.  So if I go from track to track and then back to the bus that contains CL, Sonar will white screen fairly consistently.  If you can make a correlation, I hope it helps you to know that the bakers are well aware of the issue.  Keep creating!!!