CODEWITHSUNDEEP
c++linuxuser-interfacesshterminal
loxer
loxer

Reputation: 11

How to disable the GUI in order to run the C++ program via SSH?

I'm trying to run this program remotely via SSH, but since it has a GUI, I get the error: "Could not connect to any X display."

I don't need the GUI, since I made some adaptions and want to experiment with it. I'm very new to programming, especially in C++.

So far, I tried to solve the problem, by removing/commenting the lines related to the uvcvideoproducer in the main.cpp and compiling it again, but it's still looking for a display and doesn't start via SSH.

When I entered the command "export DISPLAY=:0" in the command line first, then trying to run the programm, I get the output: "No protocol specified qt.qpa.screen: QXcbConnection: Could not connect to display :0 Could not connect to any X display."

I really don't know where to continue from here in order to solve the issue I'm having.

Thanks a lot, in advance for any help! It's very appreciated!

Upvotes: 0

Views: 208

Answers (1)

loxer
loxer

Reputation: 11

Thanks for your responses!

The thing about ssh -X is, my colleague said, it's sometimes not even working between different distributions, and I'm even using Windows to connect to Ubuntu Server on a Raspberry Pi. So sorry for not adding this important information into my original post.

I actually solved my problem by using the Xvfb library in order to simulate a display.

The only things I had to do are first installing it:

sudo apt-get install xvfb

And then run the program via the xvfb command:

xvfb-run -a --server-args='-screen 0, 160x120x16' ./GetThermal

I could also use a simulated display in the size of 1024x768x16 and probably many more formats, I just didn't notice any performance difference, when I was running it.

Upvotes: 1

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