更新NVIDIA显卡的CUDA驱动出错，You appear to be running an X server; please exit X before

（一）错误信息：html You appear to be running an X server; please exit X before... app 原来，更新驱动须要关闭图形桌面。赶忙查看一下，是否是真的有X:tcp ps aux | grep X 看到spa $ ps aux | grep X root 2242 1.6 0.0 154212 35820 tty7

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