Ubuntu16.04切換系統內核

1.遇到的問題 你本來已經裝好顯卡驅動了，然後在某次重啓後：屏幕分辨率變低了；終端輸入nvidia-smi，報錯 NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver.Make sure that the latest NVIDIA driver is installed and running 比

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