I have 6 orbiters (2 webdt, 4 androids), every now and then one or more of my orbiters stops responding. I believe it's happening when the orbiters go to sleep because the screen is black and I can't get them to turn on. The webdts screen stays black with the mouse pointer visible and I have to power cycle them to get them working again. After a few minutes the screen is black again and I have to power cycle them again. This keeps happening until I reboot the core. The android orbiters starts with a black screen but then I get a connection failed message. They too wont work again until I reboot the core. This started happening once in a while (every 3-4 weeks) but has recently gotten more frequent (every 2 - 3 days).
I thought it was a wireless connection issue but from a laptop I can connect to the same AP and get to the core. Besides that when the webdt's don't have a connection I usually get the linuxmce splash screen, not a black screen with a mouse pointer. Also the android orbiter on my phone can usually connect over the Internet but if the orbiter on my phone is doing this I can't.
I honestly don't know where to look next, has this happened to any one else? Can someone suggest logs to look at?