I cannot run L4D2 nor Portal

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14

I think I’m getting in the bottom of this. My xserver.conf has the following:

Section "Device"
  Identifier "Device-nvidia[0]"
  Driver "nvidia"
  Option "AccelMethod" "glamor"
  
  BusID "PCI:1:0:0"
Option "AllowExternalGpus"

  
EndSection

I strongly believe it’s missing the options Option "AllowGLXWithComposite" "true" and Option "AddARGBGLXVisuals" "true".