Thinkng about this some more, the errors might be because you need to install some additional packages on your system besides a graphics driver -- the proprietary graphics drivers from AMD and NVIDIA are much better, less buggy and faster, than the open source ones.  If are using Ubuntu, you should have at least the libgl1-mesa-dri and libgl1-mesa-glx packages installed.  I'd also recommend installing the mesa-utils package for the glxinfo program.  And also on Ubuntu, use the Additional Drivers application to install the proprietary driver.  We do not recommend running Chimera on a virtual machine, the graphics support in virtual machines is too buggy in general, and will be significantly slower when it does work.

To debug your OpenGL support, run the xdpyinfo program and confirm that the GLX extension is present.  If not, then you need to install additional packages from your Linux distribution and restart the X server (reboot or logout & login).  Run 'lspci | grep VGA' to see what kind of graphics card you have.  Then run 'glxinfo | grep "OpenGL vendor"' to see if the graphics driver a vendor supplied one or not.  If not, install the proprietary driver.

You may have noticed that I have not yet mention Intel graphics.  That is because, with Intel graphics, your only choice is to use the open source driver.  That driver has improved a lot recently, but it is still buggier than the AMD and NVIDIA ones, and it is very difficult to install a newer driver unless you update your Linux system.

    HTH,

    Greg

February 20 2015 10:11 AM, "Tom Goddard" <goddard@sonic.net> wrote:

 

These errors mean your system OpenGL graphics driver is not functioning.  The fix is to install an updated graphics driver.  If you have an nvidia or amd graphics card you can get a driver from their web sites.

 

Tom

 

 

 

On Feb 20, 2015, at 3:12 AM, Chiara Parravicini  wrote:

 

Dear Chimera Users,
 

After installing Chimera from the precompiled version  chimera-1.10.1-linux_x86_64.bin (the installation completed without any error),  I get the following error when I run the binary:

libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
X Error of failed request:  GLXBadContextTag
  Major opcode of failed request:  156 (GLX)
  Minor opcode of failed request:  5 (X_GLXMakeCurrent)
  Serial number of failed request:  1455
  Current serial number in output stream:  1455
 

I would appreciate any help or suggestion!
 

Many Thanks in advance
 

Chiara

 

_______________________________________________
Chimera-users mailing list
Chimera-users@cgl.ucsf.edu
http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users