Nvbuf_utils: Could not get EGL display connection

[pianist.pablo]

I am connecting to a Jetson Nano via SSH and I would like to run a camera, however, whenever I run gstreamer there is not display generated and I get this error: nvbuf_utils: Could not get EGL display connection
If I use the same command without SSH there is no issue opening the camera window.
I also get this error message :
Can’t open display:0. No protocol specified.

[marco.herrera]

Hi, this happens because it can not find your display since you’re over SSH.

You can try exporting the DISPLAY variable like this:

export DISPLAY=:0

You can check the id with the xrandr command, it is usually 0 or 1.

Or you can also try using the -X option to enable X11 forwarding like this:

ssh -X <ip-addr>

You can find a similar question here:

nvbuf_utils: Could not get EGL display connection

Hello there, I am working with Jetson nano in handless mode through SSH, I have ZED camera plunged into the nano and trying to get live feed through ssh to another computer,the problem is when I run the ZED explorer (launcher for the ZED camera) it gives me this error nvbuf_utils: Could not get EGL display connection Error in Shader source code Information written in shaderLog.txt Wrong location, does this var exist : "texInput"? Is it used in the program? (May be the GLCompiler swapped it) …

Hope this helps.

Regards,

Marco Herrera
Embedded SW Developer at RidgeRun

Contact us: support@ridgerun.com
Developers wiki: https://developer.ridgerun.com/
Website: www.ridgerun.com

[pianist.pablo]

Hi,
Thanks for the answer. However, after running xrandr I get:
Invalid MIT-MAGIC-COOKIE-1 key keyError: Can’t open display: localhost:10
and also:
No protocol specified
Can’t open display:0

I also tried to export DISPLAY:1 but the error remained

[marco.herrera]

Hi,

Can you try with the -X option for ssh?

Marco Herrera
Embedded SW Developer at RidgeRun

Contact us: support@ridgerun.com
Developers wiki: https://developer.ridgerun.com/
Website: www.ridgerun.com

[pianist.pablo]

That is also not working. After enabling forwarding with ssh -X and running streamer I get the same error message:

[DaneLLL]

Hi,
Do you use Jetpack 4.6.3? We run the command on developer kit and do not observe the issue:

$ gst-launch-1.0 nvarguscamerasrc num-buffers=100 ! fpsdisplaysink video-sink=fakesink sync=0 -v

Please give it a try. If you use previous version, we would suggest upgrade to latest release.

[pianist.pablo]

Yes, it is running Jetpack 4.6.3
I still get the same error:
pablo@pablo-desktop:~$ gst-launch-1.0 nvarguscamerasrc num-buffers=100 ! fpsdisplaysink video-sink=fakesink sync=0 -v

PuTTY X11 proxy: unable to connect to forwarded X server: Network error: Connection refused

nvbuf_utils: Could not get EGL display connection

I made sure to enable X11 forwarding in the remote server and also in puTTY.

[DaneLLL]

Hi,
Please try without -X
We do ssh login and can run the command successfully. If you don’t do any customization, ideally it should work.