“GLX” missing on display

I’ve recently upgraded to Ubuntu 10.04, and the first time I ran SciLab I got no graphics.  I’m using an Intel Corporation Mobile GM965/GL960 video card, and when I check the implementation this is what I get:

tisza@tisza-ubuntu:~$ sudo lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
tisza@tisza-ubuntu:~$ glxinfo
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".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual or fbconfig

Xlib:  extension "GLX" missing on 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".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
3 GLXFBConfigs:
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

After poking around a couple of forum pages, I finally got a workaround.  Thank you ~witekk for the fix.  So here’s how to do it. On the terminal (as root):

sudo apt-get purge nvidia*
sudo apt-get install --reinstall xserver-xorg-video-intel  libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core
sudo dpkg-reconfigure xserver-xorg
sudo update-alternatives --remove gl_conf /usr/lib/nvidia-current/ld.so.conf

Luckily, this solves the same problem with two other graphic controllers:

 

• Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
• Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

There you have it. Enjoy!