Cannot start nymea-app on Xubuntu

Hi, all,
risking a telling-off because it might be documented somewhere(!), I nevertheless cannot start the nymea-app on a Xubuntu 16.04 system. It fails with this error message:

triton:~$ sudo nymea-app
No protocol specified
qt.qpa.screen: QXcbConnection: Could not connect to display :0.0
Could not connect to any X display.

Which protocol do I have to specify, and is the lack of specifying the protocol the reason, the app cannot connect to the X-display?

Any hints much appreciated.

73, Jörg


So, this usually happens if you’re logged in via SSH and don’t have the “DISPLAY” variable set. Also, you should probably not start nymea-app with sudo…

try this

DISPLAY=:0 nymea-app