Hi everybody.

i've tried to view some video with mplayer, but when i type "mplayer" it's show:

--
Xlib: extension "GLX" missing on display ":0.0".
[gl] Could not create GLX context!
--

so, if i type "glxinfo" at console... then:

--
name of display: :0.0
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual

visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
0x21 24 tc 1 0 0 c . . 0 0 0 0 0 0 0 0 0 0 0 0 0 None
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
0x22 24 dc 1 0 0 c . . 0 0 0 0 0 0 0 0 0 0 0 0 0 None
--

anybody can help me?

i'm under slackware 10.1, kernel 2.4

thank's

You might be missing the Mesa files, or just the libGL.so from /usr/X11R6/lib.

You might also be loading the wrong modules in your X configuration file. Are you using nVidia GL drivers? If so you will need to modify the X config file as per the instructions in the driver readme's. If not then make sure that all your stuff is set up correctly. I had the same error messages when I was messing around with my X config file. Make sure that:
Is in the Module section.

at the /etc/xorg.conf already there is the line:

"load 'glx'"

does anybody knows something that i can do?