Display error at WSL

Newbie
1

I install root in WSL. And I write a simple code which draw graph. I sure that the code hasn’t problem. But the graph isn’t invoked and following massage occurs;

Error in TGClient::TGClient: can’t open display “:0”, switching to batch mode…
In case you run from a remote ssh session, reconnect with ssh -Y
Info in TCanvas::MakeDefCanvas: created default TCanvas with name c1
(int) 0

What should I do?

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ROOT Version: Not Provided
Platform: Not Provided
Compiler: Not Provided

2
3

Hello @Keistad,

As @dastudillo said (thanks for the contribution!) you need to run an X11 server to be able to use graphical output.

Cheers,
J.

4

Thanks for your advice.

When WSL, installing X11 and adding “export DISPLAY=:0” to bashrc is right.
But inserting “export DISPLAY=$(grep -oP “(?<=nameserver ).+” /etc/resolv.conf):” to bashrc is good for WSL2.

I write this reply for adventure who is annoyed by same problem.