после внезапного выключения ПК
sudo kldload nvidia
kldload: can't load nvidia: No such file or directory
/var/log/Xorg.0.log :
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 25.603] (EE) Failed to load module "nvidia" (module does not exist, 0)
[ 25.603] (EE) No drivers available.
[ 25.603] (EE)
[ 25.603] (EE) no screens found(EE)
[ 25.603] (EE)
[ 25.603] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 25.603] (EE)
[ 25.603] (EE) Server terminated with error (1). Closing log file.
Установлено
nvidia-driver-340-340.108_3
nvidia-settings-470.86
nvidia-xconfig-470.86