Hello,
I have an Acer Chromebook Model: N16P1, The issue we are having is with a 3rd party application not resuming correctly when the Chromebook is woken up from sleeping. The application is the FortiClient VPN application that can be downloaded from the Google Play Store. When the application is configured and running it works great. If I close the lid on the chromebook for some time and open back up the lid, the application comes up in an all black screen. If I close the application and open the screen it comes up with a black screen and I can't do anything to get it back to the user name and login prompt. The only way to fix this is to completely shut down the chromebook and restart it. Any ideas?