"Low graphics mode" is a symptom that can have many causes. The command I suggested might fix; I don't know. Please reproduce the error and attach your Xorg.0.log file; it should contain information about why the driver wasn't loaded.
"Low graphics mode" is a symptom that can have many causes. The command I suggested might fix; I don't know. Please reproduce the error and attach your Xorg.0.log file; it should contain information about why the driver wasn't loaded.