[elrepo] Dual boot rhel 7.5 - gui not starting

[Nicolas Thierry-Mieg]

On 06/07/2018 05:48 AM, John Adegbile wrote:
> I finally got to try out the solution  posted. Unfortunately, it did not 
> work for me though. The error I now get is:
> 
> 22.409] (II) LoadModule: "glx"
> [    22.409] (II) Loading /usr/lib64/xorg/modules/extensions/libglx.so
> [    22.409] (EE) Failed to load 
> /usr/lib64/xorg/modules/extensions/libglx.so: libGL.so.1: cannot open 
> shared object file: No such file or directory
> [    22.409] (II) UnloadModule: "glx"
> [    22.409] (II) Unloading glx
> [    22.409] (EE) Failed to load module "glx" (loader failed, 7)
> 

that's strange. At least X is trying to load the correct libglx.so. 
Don't you have mesa-libGL installed?
sudo yum install mesa-libGL

If that doesn't fix it, what's your output for
find /usr -name libGL.so.1