LattePanda and Connected Sleep

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nh905
Posts: 14
Joined: Tue Jun 07, 2016 8:15 pm

Sun Mar 08, 2020 3:43 pm

I have two of the Cherry Trail Z8300 4GB LattePanda devices, primarily for testing. Both are 'headless' using a ghost HDMI adapter and accessed via VNC. In the last few months, I would periodically lose access to one of them - the LP would not even respond to PINGs. In the past, I would reboot, but I recently noticed that connecting a keyboard/monitor would often allow me to regain access.

I noticed today that the Event Viewer showed "The system is exiting connected standby" around the time I regained access. It appears Connected Standby was introduced in Windows 8.1 and improved in Windows 10 to save battery life without having to go into Sleep mode. It is only available on selected Intel processors. So far, I have not found anything suggesting that the Cherry Trail processors support Connected Standby.

Has anyone else experienced these kinds of hangs? There is a regedit update to disable Connected Standby (https://www.itprotoday.com/mobile-manag ... ed-standby) that I will try.

Thanks, Norbert

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LattePanda
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Posts: 2628
Joined: Wed Jan 20, 2016 9:09 am

Mon Mar 16, 2020 2:29 am

Enjoy Tinkering with LattePanda ! :lol:

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nh905
Posts: 14
Joined: Tue Jun 07, 2016 8:15 pm

Mon Mar 16, 2020 2:38 pm

Not sure how the post you referenced is related. I have been using an HDMI emulator plug similar to the Digitus DA-70466 to get higher screen size when accessing via VNC.

I am not sure when this problem started, probably in the last two months, which makes me suspect a Windows update may have enabled the Connected Sleep feature or added support for the Cherry Trail processor. I discovered about a month ago that connecting a physical keyboard/mouse would wake up the system but was too busy to diagnose the root cause.

So far, I have not had any re-occurrences after updating the registry, but the problem only happens intermittently - only time will tell.

Thanks, Norbert

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