There is one remote mac (running latest version of TVhost 11 on OS10.10.5) that repeatedly turns into a black screen which prevents any further access which I can only circumvent by having someone on site to reboot. I always disable the option to Lock on Session End as this is sometimes also a problem, but I cannot find a pattern that causes the black screen.

I can connect, there is the correct info on the server when I press the Home button, but remote desktop remains entirely black. As I see this behaviour on only one mac (and i control a dozen over different locations), could there be some security on the LAN kicking in?. We've got the same issue and it persisted from v10 thru v11, and we're not upgrading to 12 yet, in part because that shouldn't be the resolution for a remote connection app. It's connected to a display, so that's not the issue. TV11 Host has been removed and reinstalled multiple times, but the issue persists. It's problematic - telling your client to reboot their server because it's not accessible is.well, it's not ideal, right? I can actually see the mouse cursor, but the display itself never actually mounts until a restart and it's a server so that's really a double-whammy. Floppy disk drive for mac.

Hardware: MacMini 2012, 16GB RAM, SSD, set to never sleep, and for drives to never spin down; is visible via TV and shows as online, but simply doesn't ever display the display once connected. I agree that it is very annoying that this issue can not be solved. This is a highly reproducible issue once you are on certain networks speeds as I do not see this with all my mac servers. What I do nowadays to bypas this: I fire a second request for remote access, you get a warning that there is already a connection (yeah. The black screen), ignore that warning and open 2nd connection. This will open directly to the desktop since you had just entered credentials a few minutes earlier. So here is also the clue for TV developers how to 'backdoor' your way in on the blackscreen. as somehow the 2nd request gets through.

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Hope it rings a bell somewhere at TV, or at least helps you Frank. Have this issue as well, also figured out the lock workaround, but FYI: mine is also because is also because of display sleep. But I get the black screen whether in my home LAN (where the computer i'm remoting into is - my laptop, which lives in the closet) or remoting into it from my office. If i'm home, i just switch my mouse over and back because, unlike teamviewers cursor, the actual local cursor will wake it (duh, obviously).

But yea if i'm out of home i have to do the lock screen trick and its supppper annoying.

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