Hello @theseus
Sounds like the driver is not loaded properly… Could you open a terminal and type:
grep glx /var/log/Xorg.0.log
There should be displayed this:
$ grep glx /var/log/Xorg.0.log
[ 9.305] (II) LoadModule: "glx"
[ 9.333] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 9.339] (II) Module glx: vendor="X.Org Foundation"
[ 9.375] (II) Loading sub module "glxserver_nvidia"
[ 9.375] (II) LoadModule: "glxserver_nvidia"
[ 9.375] (II) Loading /usr/lib/nvidia/xorg/libglxserver_nvidia.so
[ 9.488] (II) Module glxserver_nvidia: vendor="NVIDIA Corporation"
I believe it is some sort this problem: