System hung whenever vscode was started. INSTALLING NVIDIA DRIVERS ON RHEL OR CENTOS 7( http://www.advancedclustering.com/act_kb/installing-nvidia-drivers-rhel-centos-7/ ). Somehow other parts were completed already, maybe nvidia package install script did that. Missing parts were 1. "blacklist nouveau" in /etc/pmodprobe.d/blacklist.conf 2. mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r)-nouveau.img dracut /boot/initramfs-$(uname -r).img $(uname -r)