I analyzed the problem and found the culprit Each time a window manager is (re)started, due to the conf file /etc/init/gpu-manager.conf , the program 'gpu-manager' is called. This program does not like my NVIDIA card, so it calls "update-alternatives" to force X11 to use mesa drivers and libs, even though NVIDIA drivers and libs are installed
TO "solve" the problem I moved away the culprit # mv /usr/bin/gpu-manager /usr/bin/gpu-manager~~ and used # update-alternatives --config i386-linux-gnu_egl_conf # update-alternatives --config i386-linux-gnu_gl_conf and then restarted .the system Now it works as a charm, getting superb framerates in games etc etc. Some more info I have a card NVIDIA Corporation GK208 [GeForce GT 730] I installed Ubuntu xenial I am running kernel 4.8.0-41-generic gpu-manager is part of ubuntu-drivers-common 1:0.4.17.2 I attach the log of gpu-manager ** Attachment added: "log of gpu-manager" https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-367/+bug/1665581/+attachment/4834000/+files/gpu-manager.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1665581 Title: Xorg cannot use nvidia, missing symlink To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-367/+bug/1665581/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
