Hi, I have been reading Chimera document on Chimera web site and I am understanding that Chimera is better to run with hardware accelerator, but we don't have GPUs in our virtual machines, we have to use mesa and we are using xlib-glx driver for remote VNC connection. One major issue I am currently investigating is that the binary Chimera code can perform 3D rotation in mesa DRI driver, but very poor performance when using mesa xlib-glx driver on CentOS 6. Please correct me my following assumptions and options to rectify the problem: (1) Binary code could be hard linked with mesa DRI driver, the solution is to remove the hard link, or replace some libraries. (2) Chimera may not be able to run on mesa xlib-glx driver at all, no possible workarounds, no solution. (3) Chimera can be used with xlib-glx driver if we can build Chimera source code with mesa xlib-glx driver. I understand you don't encourage people to build Chimera from source code, nor do I wish. But if that is the only choice which can fix the problem, would you please point me instructions and procedures how to build the source code on Linux? I've looked at README.bootstrap from svn source code, but Thank you. Kind regards. Jupiter