Installing and using Compiz Fusion
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5 Troubleshooting Compiz Fusion

The following section covers frequently asked questions regarding problems when running Compiz Fusion.

5.1. I have installed Compiz Fusion, and after running the commands you mention, my windows are left without title bars and buttons. What is wrong?
5.2. When I run the command to start Compiz Fusion, the X server crashes and I am back at the console. What is wrong?

5.1. I have installed Compiz Fusion, and after running the commands you mention, my windows are left without title bars and buttons. What is wrong?

You are probably missing a setting in /etc/X11/xorg.conf. Review this file carefully and check especially the DefaultDepth and AddARGBGLXVisuals directives.

5.2. When I run the command to start Compiz Fusion, the X server crashes and I am back at the console. What is wrong?

If you check your /var/log/Xorg.0.log file, you will probably find error messages during the X startup. The most common would be:

(EE) NVIDIA(0):     Failed to initialize the GLX module; please check in your X
(EE) NVIDIA(0):     log file that the GLX module has been loaded in your X
(EE) NVIDIA(0):     server, and that the module is the NVIDIA GLX module.  If
(EE) NVIDIA(0):     you continue to encounter problems, Please try
(EE) NVIDIA(0):     reinstalling the NVIDIA driver.

This is usually the case when you upgrade Xorg. You will need to reinstall the x11/nvidia-driver port so glx is built again.