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[ubuntu] Intel graphics card and OpenGL GLX?

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http://ubuntuforums.org – I am trying to run FlightGear which apparently requires OpenGL. Whenever I try to run it, I get this error message: Xlib: extension "GLX" missing on display ":0.0". freeglut (fgfs): OpenGL GLX extension not supported by display ':0.0' I have run lshw and this is what it reports for the graphics card on my eMachines E520 laptop: *-display:0 UNCLAIMED description: VGA compatible controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 07 width: 64 bits clock: 33MHz capabilities: msi pm bus_master cap_list configuration: latency=0 *-display:1 UNCLAIMED description: Display controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 07 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: latency=0 I have read a lot about installing OpenGL for NVidia cards, but I have also seen warnings not to install NVidia drivers if you have an Intel card. So can someone tell me how to install OpenGL? BTW- here is a copy of my xorg.conf file: Section "Device" Identifier "Configured Video Device" Driver "intel" Option "MigrationHeuristic" "greedy" EndSection Section "Monitor" Identifier "Configured Monitor" EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" EndSection thanks.... (Hardware)