Can not open collection/game objects with visual components in Editor on Ubuntu 20.04.3 LTS

[paweljarosz]

Expected behaviour

Openning collections correctly.

Actual behaviour

When opening collection (with GUI components) the error occurs and nothing is opened/visible in the Editor

Steps to reproduce

On Ubuntu 20.04.3 LTS open Defold, and open collection with some kind of visual representation (GUI, sprites, tilemaps).
Restarting Defold does not resolve the issues. It happens in any project. Scripts are opening normally. Only objects with visual components.

---

Build time	2021-10-18T08:40:15.071173
Defold channel	editor-alpha
Defold editor sha	6bfeea3
Defold engine sha	6bfeea3
Defold version	1.2.188
Error	19665a8ff3ca4baca47b97ec5cda9c09
GPU	Mesa Intel(R) UHD Graphics (CML GT2)
GPU Driver	OpenGL ES-CM 1.1 Mesa 21.0.3
Java version	11.0.1+13
OS arch	amd64
OS name	Linux
OS version	5.11.0-46-generic

[JCash]

We should really print the actual error in the error message...

[paweljarosz]

This is displayed in the editor:

java.lang.ClassCastException: class jogamp.opengl.es1.GLES1Impl cannot be cast to class com.jogamp.opengl.GL2ES2 (jogamp.opengl.es1.GLES1Impl and com.jogamp.opengl.GL2ES2 are in unnamed module of loader 'app')

Some other notices:

When I open any coll/go with or visual component itself the error appears, and then when I open another one, nothing pops up. Unless I open something textual - like script, and then I open any visual editor again, the error pops up again, once.

Sometimes other error appears, I noticed it happens only for GUI, reported in the ticket: #6359
This is displayed then:

java.lang.ClassCastException: Unknown

[AGulev]

@paweljarosz please take a look this topic #5780

[britzl]

Solved by setting MESA_GL_VERSION_OVERRIDE=2.1

https://forum.defold.com/t/problem-with-displaying-visual-components-on-ubuntu-20-04/70234/2