sudo systemctl set-default graphical.target Rollback must match both Intel iGPU and NVIDIA dGPU. Use prime-select :
sudo prime-select nvidia # or intel sudo apt install nvidia-prime : Kernel modules (nvidia-drm, nvidia-modeset) may fail to load after rollback if kernel version is newer than driver supports. Check compatibility: NVIDIA Unix Driver Versions . 8. Special Cases 8.1 Data Center / Tesla GPUs (Grid vGPU) Do not use DDU or consumer tools. Use nvidia-smi -r (GPU reset) or nvidia-modprobe -r . Rollback requires re-deploying vGPU host driver package via hypervisor (VMware ESXi, KVM, Xen). 8.2 NVIDIA GRID on VDI Rollback involves detaching vGPU, removing kernel module, re-installing older .deb/.rpm, re-attaching. Backup VM first. 8.3 Windows Server with WDDM Mode Use pnputil to enumerate and remove: how to roll back nvidia drivers