Why 3.1 specifically? Could it be that the driver doesn’t support 3.1? What if you say 2.1 instead?
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Using 2.1 seems to have solved it for this user: https://github.com/defold/defold/issues/4985#issuecomment-652798556
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Yeees, 2.1 works. U are genius. 
Woho!
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Thanks a lot britzl…I can confirm…2.1 works with Ubuntu 20.04…just out of curiousity…I used Defold with Ubuntu 18.04 in the past on the same Notebook…and it worked with export override 3.1…with ubuntu 20.04 it only works with export override 2.1…does this mean that for some reason the newer operating system (ubuntu 20.04) doesnt has the necessary driver support for the never opengl-version anymore? strange…but anyway…your solution works…thanks a lot britzl and have a nice weekend 
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No idea! I’m happy to hear that it worked though!
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Can confirm, 2.1 works for me as well.
Thanks a lot! Just in time for GMTK game jam 
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Thanks britzl for testing and discovering that this version worked. Now this don’t have more errors
Confirmed that using Mesa 2.1 works on Manjaro Linux GNOME 20.03 as well.
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