[X2Go-User] Ubuntu Directions to fix qt.qpa.xcb: X server does not support XInput 2?

[James Bowery]

Looking up

qt.qpa.xcb: X server does not support XInput 2

I discovered

https://community.rstudio.com/t/x2go-and-rstudio/29704/5

which linked to

https://wiki.x2go.org/doku.php/wiki:development:glx-xlib-workaround

but following the directions for Ubuntu, I get:

E: You must put some 'source' URIs in your sources.list

Moreover, the directions are for Ubuntu 14 and we're on 20, so I'm not even
sure the directions are up to date if, indeed, the problem with x2go still
exists after all this time.
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