
blank screen on connect
I have verified that this is not the same as this bug
Description-
try to connect to an unattended client, results in black screen with a white rectangle in the middle and the text 'Connected'
However this text is lying, there's nothing you can do to make the connection work.
I was able to fix this on one machine by logging in with VNC, then dragging the app from /opt into the
System Preferences/ Security/ Privacy/ Accessibility
'allow' panel
*I also rebooted the machine, not sure if that is important.
*reinstalling from the Control admin interface does not fix this
*I have not tried an uninstall & reinstall
This indicates that something is different enough between the v19.2 clients and the v19.4 clients to cause Apple's security to vomit and disallow it. I upgraded directly from v19.2 to v19.4 on Centos
Customer support service by UserEcho
working on a second machine with the same issue I found the following-
- had remotely rebooted several times with no effect
- machine had a manual IP address set (probably not relevant)
- logged into a working machine on the same network with CWC, then used VNC to get to the non working machine
- it appeared to have a user logged in whose password I don't have
- logged in with my admin credentials
and sometime around that point the Control software became active again and I was able to log in using CWC- no other changes were made
Rebooted the machine and I was still able to log in. Weird.
ok I have a workaround for this.
The solution is not to re add the app to the security system preferences
The problem is that I had set 2 things to happen when I log on to an unattended session
- blank guest monitor
- acquire wake lock
I've turned off both of these and things are working ok.
I suspect that this bug is related to this one-
https://control.product.connectwise.com/communities/6/topics/2650-blank-guest-monitor-actually-blanks-host-monitor
and I suspect if one was fixed the other would be ok- I'd concentrate on the other one as it is probably causing this one.