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    <div class="moz-cite-prefix">Hi Bob,<br>
      <br>
      If it works as root, but not as a normal user, then there are two
      likely possibilites: (a) they are using different OpenGL libraries
      (libGL.so), or (b) a file/device permissions problem.  And double
      check that your DISPLAY environment variable is ":0".  Also note
      that most issues are solved by installing the proprietary AMD or
      NVIDIA graphics driver (using the Additional Drivers dialog), so
      if you aren't, do that first.  My condolences if you have Intel
      graphics -- in that case I'd recommend updating to Ubuntu 13.04
      (or newer), the Intel Linux graphics driver is under heavy
      development and the newer versions are much better.<br>
      <br>
      A quick test, run glxinfo (from the mesa-utils package), both as
      root and as yourself.  They should be the same, if not, then the
      differences are a big clue.<br>
      <br>
      To test the OpenGL library hypothesis, run (CHIMERA is the path to
      the Chimera installation):<br>
      <br>
          env LD_LIBRARY_PATH=CHIMERA/lib ldd CHIMERA/lib/_chimera.so<br>
      <br>
      both as root and as yourself.  If they are not the same, figure
      out why.  If they are the same, then check the permissions on
      every shared library listed.<br>
      <br>
          Please let me know what you try and if it fixes the bug,<br>
      <br>
          Greg<br>
      <br>
      On 07/16/2013 07:13 AM, Robert Wohlhueter wrote:<br>
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    <blockquote cite="mid:51E554FD.8070507@earthlink.net" type="cite">
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      <font size="+1">I've been using Chime<font size="+1">ra 1.5.3 <font
            size="+1">under Lin<font size="+1">ux <font size="+1">(Ubuntu

                12.04, 64-bit) without problems; that version I had
                installed<font size="+1"> as root, and<font size="+1">
                    is owned by root.  Just now I updated to version
                    1.8, which, initially, I also installed as root. 
                    But trying to run it (as non-root) gave me fairly
                    opa<font size="+1">que error messages<font size="+1">
                        (copied below).  <font size="+1">On a hunch
                          that it was a <font size="+1">matter of
                            privilege, I tried running with `sudo` --
                            which works fine.  <br>
                            <br>
                            <font size="+1">Since <font size="+1">it
                                was not obvious where the problem lay, I
                                cleaned out the installation, and
                                installed an<font size="+1">ew as a
                                  normal user (me).  Accordingly, the
                                  whole installation directory tree is <font
                                    size="+1">owned by me.  But still I
                                    can<font size="+1">not run it (same
                                      errors) as me, but only with
                                      `sudo`. Same user, same <font
                                        size="+1">start directory, appa<font
                                          size="+1">rently the same
                                          Python (2.7) as w<font
                                            size="+1">or<font size="+1">ks

                                              with v. 1.5.3.</font></font></font></font><br>
                                      <br>
                                      <font size="+1">I'm totally
                                        flummoxed!  Can't imagine wh<font
                                          size="+1">ere the privilege
                                          hang-u<font size="+1">p is. 
                                            Any hints where I should
                                            look?<br>
                                            <br>
                                            <font size="+1">Thanks,<br>
                                              <br>
                                              Bob Wohlhueter<br>
                                              <br>
                                              <font size="+1">*****************************<font
                                                  size="+1">C<font
                                                    size="+1">-</font>shell

                                                  ou<font size="+1">tput*******************</font></font></font><br>
                                              <font size="+1">chimera<br>
                                                <font size="+1">X Error
                                                  of failed request:
                                                  BadRequest (invalid
                                                  request code or no
                                                  such operation)<br>
                                                  <font size="+1">   <font
                                                      size="+1">Major
                                                      opcode of failed
                                                      request:  128
                                                      (GLX)<br>
                                                      <font size="+1">  
                                                        Minor opcode of
                                                        failed request: 
                                                        198 ()<br>
                                                        <font size="+1">  

                                                          Serial number
                                                          of failed
                                                          request:  2813<br>
                                                          <font
                                                          size="+1">  
                                                          Current<font
                                                          size="+1">
                                                          serial number
                                                          in output
                                                          stream:  2813</font></font><br>
                                                        </font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font>
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