Nim program fails

[Alain De Vos]

import pixels
putPixel(1,1)
putPixel(10,10)
putPixel(100,100)

Nim program above works fine on FreeBSD,Artix-Linux,MX-Linux

On Gentoo it fails with error:
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 151 (GLX)
Minor opcode of failed request: 3 (X_GLXCreateContext)

[Alain De Vos]

Solution was simple. I had to add the user to the "video group".