Please try reinstalling the Nvidia driver: sudo apt install --reinstall nvidia-340
then reboot and tell us if the problem persists. ** Changed in: cogl (Ubuntu) Status: New => Incomplete ** Changed in: nvidia-graphics-drivers-340 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/1810929 Title: totem crashed with SIGSEGV in_cogl_context_get_gl_extensions() from _cogl_driver_update_features() from _cogl_winsys_context_init() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cogl/+bug/1810929/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs