Bug#879030: 375.82-5: glxgears segmentation fault in glXCreateContext

[Vincas Dargis]

I managed to fix the crash, somehow.

I believe it's problem with primus package, as after purging and reinstalling nvidia/bumblebee/primus stuff, I got 
glxgears working, BUT without primus.

If I try to install primus, apt attempts to remove stuff:

```
The following additional packages will be installed:
   libgl1-nvidia-glx primus-libs primus-libs-ia32:i386
The following packages will be REMOVED:
   libgl1-nvidia-glvnd-glx libgl1-nvidia-glvnd-glx:i386 nvidia-driver nvidia-driver-libs nvidia-driver-libs:i386 
nvidia-driver-libs-i386:i386
   nvidia-vulkan-common nvidia-vulkan-icd nvidia-vulkan-icd:i386
The following NEW packages will be installed:
   libgl1-nvidia-glx primus primus-libs primus-libs-ia32:i386
```

Now, without primus, if I run glxgears, it does not crash, though it says it is using integrated graphics?

```
GL_RENDERER   = Mesa DRI Intel(R) Haswell Mobile
GL_VERSION    = 3.0 Mesa 17.2.2
GL_VENDOR     = Intel Open Source Technology Center
```