OK, the situation has changed, but not so much. The display still completely freeze after a while if I use 3D. It just takes longer. I enclose a new_full_dmesg with all the details. I have used Blender, then SuperTuxKart then Planet Nomads. It froze with this last one, as it is the most demanding game I have. Again, I got the dmesg throught SSH as I couldn’t recover directly and had to switch off the computer manually. Regards.