amarao (amarao_san) wrote,
amarao
amarao_san

nouveau GLX diagnostics

If you gettting some issues with NO OPENGL at ALL, here simple diagnostics:

(install utilities as nessesary)
glxinfo:
Error: couldn't find RGB GLX visual or fbconfig

glxgears:
Error: couldn't get an RGB, Double-buffered visual

reason: you does not use nouveau driver but fallbacking to vesa. Yep, vesa _could_ render DVI images of high quality, and even support dual monitor configuration. But not an opengl of any kind.

So, main reason of problem is one of following:
1) No nouveau driver (kernel module: check lsmod|grep nouveau)
2) No xorg.conf.

Minimal xorg.conf from nouveau wiki should help:

Section "Device"
Identifier "n"
Driver "nouveau"
EndSection

3) Check if no nvidia traces are in system.
4) check if libGL and libGLU are in system.
Tags: desktop linux, howto, nvidia
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