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veyon / veyon

Cross-platform computer monitoring and classroom management
https://veyon.io
GNU General Public License v2.0
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Veyon 4.2.2 Demo mode only blue screen despite checking troubleshooting tips and WOL not working #541

Open RvdH72 opened 5 years ago

RvdH72 commented 5 years ago

All works well including LDAP and acces rules, but in Veyon 4.2.2 Demo mode shows only blue windows where I expect the screen of teacher. I checked the troubleshooting tips but still no joy. I tried changing the Demo server settings (update interval, key frame interval and memory limit) except the port no. 11400 (didn't change that).

In demo mode, only a black screen or window is displayed on client computers Please make sure that: in the configuration page Service under network settings the demo server port is set to its default value 11400 on the configuration page Service the firewall exception is enabled on the master computer or a third party firewall is configured to allow incoming connections to TCP port 11400 the user of Veyon Master has access to its own computer (i.e. the local Veyon Service). In the access control ruleset there may exist a rule prohibiting access to the computer if a teacher is logged on. In this case you should create a rule with the condition Accessing computer is localhost enabled as far up the list of rules as possible. Otherwise the demo server is unable to access the teacher computer’s screen content and distribute it to the client computers.

Wake On Lan doesn't work, but is that because there must be a macaddress attribute in computeraccounts? Can I make a feature request so Veyon can ask to DHCP what the macadress is for a particular computer?

RvdH72 commented 5 years ago

8200_2019-06-27_13-53-43

pauloboc commented 5 years ago

On WOL, it is necessary to register the mac address, and on the client computer you must configure WOL in the bios as enabled.

RvdH72 commented 5 years ago

Thanks, now I remember: https://github.com/veyon/veyon/issues/39#issuecomment-445014278 I found another script and used that instead: https://veyon.nodebb.com/topic/47/script-powershell-for-export-dhcp-mac-address-and-import-to-active-directory. So that is solved.

Remains the blue box/window on demo mode. Any help?