xorg
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- Black screen after restarting X: NVIDIA: Failed to initialize the NVIDIA kernel module (kernel upgraded, not rebooted)
After a kernel and NVIDIA driver upgrade without a reboot, restarting X gave a black screen and "Failed to initialize the NVIDIA kernel module". The running kernel had only the old module loaded. Build the module for the running kernel with DKMS, swap the modules, recreate /dev/dri, then reboot properly.