I've updated to the newest possible version... x11-video-nvidiaG03-340.76-0.x86_64 nvidia-gfxG03-kmp-desktop-340.76_k3.18.3_1-0.x86_64 nvidia-computeG03-340.76-0.x86_64 nvidia-glG03-340.76-0.x86_64 nvidia-uvm-gfxG03-kmp-desktop-340.76_k3.18.3_1-0.x86_64 But the problem remains.