这样操作后，重启终端命令还是一样结果

nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

按这个方法操作后，终端命令还是

nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

你得把470驱动删除，安装390驱动

再执行完这些命令后，终端命令还是一样

vidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

再重启系统看看

重启后再终端命令还是一样

nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

sudo dmesg | grep nvidia看一下

sudo dmesg | grep nvidia
[ 26.672557] nvidia: loading out-of-tree module taints kernel.
[ 26.672567] nvidia: module license 'NVIDIA' taints kernel.
[ 26.672571] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[ 26.672571] nvidia: module license taints kernel.
[ 26.871819] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 26.872289] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 26.889242] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 27.628554] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 27.628944] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 27.643241] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 53.537363] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 53.537778] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 53.547756] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 64.343567] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 64.343951] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 64.355045] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 71.273587] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 71.273987] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 71.294257] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 86.948095] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 86.948481] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 86.961545] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 120.501162] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 120.501549] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 120.516298] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 121.275160] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 121.275562] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 121.290319] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 210.830807] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 210.831200] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 210.842747] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 213.697777] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 213.698169] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 213.710827] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 350.186289] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 350.186677] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 350.203128] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 351.551502] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 351.551904] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 351.570146] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 366.266102] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 366.266484] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 366.280598] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 373.431802] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 373.432206] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 373.441854] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 374.426350] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 374.426738] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 374.438825] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 398.788321] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 398.788743] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 398.800536] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 399.682798] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 399.683182] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 399.693573] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237

安装的是390显卡驱动吗？

是的

sudo modprobe nvidia试一下

sudo modprobe nvidia
modprobe: ERROR: could not insert 'nvidia': No such device

重启系统，然后再次sudo dmesg | grep nvidia和sudo dmesg | grep NVIDIA，以便我看一下是显卡不支持该驱动还是什么问题

sudo dmesg | grep nvidia
[ 24.426738] nvidia: loading out-of-tree module taints kernel.
[ 24.426748] nvidia: module license 'NVIDIA' taints kernel.
[ 24.426751] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[ 24.426752] nvidia: module license taints kernel.
[ 24.626504] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 24.626867] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 24.645221] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 25.376562] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 25.376943] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 25.396251] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 54.511069] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 54.511497] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 54.524638] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 66.806449] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 66.806841] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 66.816165] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 67.288696] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 67.289072] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 67.303203] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 140.470479] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 140.470873] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 140.485928] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 156.610422] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 156.610845] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 156.626475] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 160.398365] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 160.398748] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 160.408334] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 180.632012] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 180.632393] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 180.657758] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 188.521180] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 188.521580] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 188.535098] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 189.400773] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 189.401164] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 189.412128] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 326.184101] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 326.184494] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 326.194825] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237
[ 328.840898] nvidia: unknown parameter 'NVreg_DynamicPowerManagement' ignored
[ 328.841285] nvidia-nvlink: Nvlink Core is being initialized, major device number 237
NVRM: nouveau, rivafb, nvidiafb or rivatv
[ 328.853881] nvidia-nvlink: Unregistered the Nvlink Core, major device number 237

udo dmesg | grep NVIDIA
[ 3.146466] nouveau 0000:01:00.0: NVIDIA GK107 (0e7060a2)
[ 24.426748] nvidia: module license 'NVIDIA' taints kernel.
[ 24.627116] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 24.627119] NVRM: No NVIDIA graphics adapter probed!
[ 25.377173] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 25.377185] NVRM: No NVIDIA graphics adapter probed!
[ 54.511741] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 54.511744] NVRM: No NVIDIA graphics adapter probed!
[ 66.807087] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 66.807090] NVRM: No NVIDIA graphics adapter probed!
[ 67.289317] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 67.289321] NVRM: No NVIDIA graphics adapter probed!
[ 140.471115] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 140.471119] NVRM: No NVIDIA graphics adapter probed!
[ 156.611092] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 156.611096] NVRM: No NVIDIA graphics adapter probed!
[ 160.398981] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 160.398984] NVRM: No NVIDIA graphics adapter probed!
[ 180.632612] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 180.632616] NVRM: No NVIDIA graphics adapter probed!
[ 188.521817] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 188.521821] NVRM: No NVIDIA graphics adapter probed!
[ 189.401395] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 189.401398] NVRM: No NVIDIA graphics adapter probed!
[ 326.184738] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 326.184741] NVRM: No NVIDIA graphics adapter probed!
[ 328.841506] NVRM: The NVIDIA probe routine was not called for 1 device(s).
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
NVRM: driver(s)), then try loading the NVIDIA kernel module
[ 328.841509] NVRM: No NVIDIA graphics adapter probed!

/etc/default/grub我看一下

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="​(sed 's, release .*,,g' /etc/system-release)"
GRUB_DEFAULT=0
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="gfxterm"
GRUB_CMDLINE_LINUX="rhgb quiet mitigations=off skew_tick=1 transparent_hugepage=always spectre_bhi=off rd.driver.blacklist=nouveau,nova_core modprobe.blacklist=nouveau,nova_core nvidia-drm.modeset=1"
GRUB_DISABLE_RECOVERY="true"
GRUB_THEME="/usr/share/evernight-vista-grub/theme.txt"
GRUB_ENABLE_BLSCFG=true

nvidia 340驱动试过了吗？

还没有，那更老版本驱动对新内核支持可能更加没那么好

卸载390驱动后，

sudo dnf in akmod-nvidia-340xx kernel-evernight-devel xorg-x11-drv-nvidia-340xx-cuda
仓库更新和加载中：
Evernight Vista 44 - x86_64 - Updates 100% | 1.4 KiB/s | 6.9 KiB | 00m05s
Terra Mesa for Evernight Vista 44 100% | 1.2 KiB/s | 5.5 KiB | 00m05s
Terra Extra for Evernight Vista 44 100% | 1.2 KiB/s | 5.5 KiB | 00m05s
Terra for Evernight Vista 44 100% | 1.2 KiB/s | 5.5 KiB | 00m05s
仓库加载完成。
无法解析事务:
未找到匹配的参数：akmod-nvidia-340xx
软件包「kernel-evernight-devel-7.1.8-kairiki.fc44.x86_64」已安装。
未找到匹配的参数：xorg-x11-drv-nvidia-340xx-cuda
你可以尝试添加到命令行中：
--skip-unavailable 跳过不可用软件包

那你只能装390了。。。。