Re: nvidia driver installation
The only things that I see in your X log that are bad is:
(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
dlopen: /usr/lib/tls/libnvidia-tls.so.1: cannot restore segment prot after reloc: Permission denied
(EE) Failed to load /usr/lib/xorg/modules/extensions/libglx.so
(II) UnloadModule: "glx"
(EE) Failed to load module "glx" (loader failed, 7)
(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.
The failure above is due to an SELinux problem.
However, that wouldn't cause the problem you're reporting. Please generate and post an nvidia-bug-report.log while this problem is present.