delldell-Precision-3630-Tower  /nvme/cudaspace  nvidia-smi NVIDIA-SMI has failed because it couldnt communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.原因是因为内核升级导致驱动和内核不兼容解决办法降级内核从5.15.0-107降级为5.15.0-102查找linux指定版本的内核镜像apt-cache search linux|grep 5.15.0-102打开软件源配置文件添加新的软件源并更新sudo vim/etc/apt/sources.list deb http://security.ubuntu.com/ubuntu trusty-security main sudo apt-get update安装指定版本内核的linux系统头文件以及镜像还有扩展sudo apt-get install linux-image-5.15.0-102-generic sudo apt-get install linux-image-extra-5.15.0-102-generic#没有安装也没影响sudo apt-get install linux-headers-5.15.0-102-generic sudo apt-get install linux-headers-5.15.0-102#不建议安装这个因为大概一晚上过去了输入以下命令可以查看安装的内核版本有哪些delldell-Precision-3630-Tower /etc/apt/sources.list.d  dpkg--get-selections|grep linux-image linux-image-5.15.0-101-generic deinstall linux-image-5.15.0-102-generic install linux-image-5.15.0-105-generic install linux-image-5.15.0-107-generic install linux-image-5.15.0-75-generic deinstall linux-image-5.15.0-76-generic deinstall linux-image-5.15.0-78-generic deinstall linux-image-5.15.0-79-generic deinstall linux-image-5.15.0-82-generic deinstall linux-image-5.15.0-83-generic deinstall linux-image-5.15.0-84-generic deinstall linux-image-5.15.0-86-generic deinstall linux-image-5.15.0-87-generic deinstall linux-image-5.4.0-26-generic deinstall linux-image-generic-hwe-20.04 install安装显卡网卡等驱动sudo apt-get install linux-tools-5.15.0-102-generic sudo apt-get install linux-modules-extra-5.15.0-102-generic查看当前内核启动顺序并修改delldell-Precision-3630-Tower /etc/apt/sources.list.d  grep menuentry/boot/grub/grub.cfgif[x${feature_menuentry_id} xy];then menuentry_id_option--idmenuentry_id_optionexport menuentry_id_option menuentryUbuntu--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-simple-1efebe71-306e-4781-aef0-830571f2aacd{submenuUbuntu 的高级选项$menuentry_id_optiongnulinux-advanced-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUbuntuLinux 5.15.0-107-generic--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-5.15.0-107-generic-advanced-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUbuntu, with Linux 5.15.0-107-generic (recovery mode)--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-5.15.0-107-generic-recovery-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUbuntuLinux 5.15.0-105-generic--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-5.15.0-105-generic-advanced-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUbuntu, with Linux 5.15.0-105-generic (recovery mode)--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-5.15.0-105-generic-recovery-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUbuntuLinux 5.15.0-102-generic--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-5.15.0-102-generic-advanced-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUbuntu, with Linux 5.15.0-102-generic (recovery mode)--classubuntu--classgnu-linux--classgnu--classos$menuentry_id_optiongnulinux-5.15.0-102-generic-recovery-1efebe71-306e-4781-aef0-830571f2aacd{menuentryUEFI Firmware Settings$menuentry_id_optionuefi-firmware{sudo vim/etc/default/grub#addGRUB_DEFAULTAdvanced options for Ubuntu Ubuntu, Linux 5.15.0-102-generic#更新配置sudoupdate-grubsudo reboot在重启过程中一直按esc进入ubuntu 的高级选项选择Linux 5.15.0-102-generic查看内核版本发现降级成功delldell-Precision-3630-Tower /etc/apt/sources.list.d  uname-r 5.15.0-102-generic