I have the same problem with ubuntu feisty and  an Ati  9100 video card.
Driver are correctly installed, glxinfo return direct rendering on and
glxgears work very well but when I run wxgazebo I get this error:

X Error of failed request:  GLXUnsupportedPrivateRequest
 Major opcode of failed request:  157 (GLX)
 Minor opcode of failed request:  16 (X_GLXVendorPrivate)
 Serial number of failed request:  21
 Current serial number in output stream:  22
server died
stopping server




----- Original Message ----- From: "Benjamin Chase" <
[EMAIL PROTECTED]>
To: "Gazebo developers" <[email protected]>
Sent: Sunday, June 03, 2007 11:17 PM
Subject: Re: [PlayerStage-Gazebo] X Error of failedrequest:
GLXUnsupportedPrivateRequest

> Hello Man,
>
>    I had similar Problems with Fedora Core 6 as well.  First make sure
> you have Mesa installed as OpenGL Renderer. Second make sure SELinux
> Policy allows the use of OpenGL through wxgazebo or disable SELinux
> completely. That was my problem. I hope that helps you.
>
> Sincerly,
>
> Benjamin Chase
>
> Man Forast wrote:
>> Hi, I've problem with wxgazebo and gazebo too. When I try to run some
>> world I get this error message:
>>
>> X Error of failed request:  GLXUnsupportedPrivateRequest
>>   Major opcode of failed request:  143 (GLX)
>>   Minor opcode of failed request:  16 (X_GLXVendorPrivate)
>>   Serial number of failed request:  21
>>   Current serial number in output stream:  22
>> server died
>> stopping server
>>
>>
>> I try with all library SGIX GLX GLXP etc. but with same results!
>>
>> I have an ATI 9200 video card on Ubuntu Feasty and all work well less
>> gazebo. If I run " glxinfo | grep rendering" and "glxinfo |grep
>> vendor" commands on terminal the output is:
>>
>> -direct rendering: Yes
>>
>> -server glx vendor string: SGI
>>  client glx vendor string: SGI
>>  OpenGL vendor string: Tungsten Graphics, Inc.
>>
>> So, my open source driver work well and I don't know which is my
>> problem!!
>>
>> Can anyone help me?
>>
>> tnx in advance!
>>
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>
>
>
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