ubuntu Command ‘nvidia-smi’ not found
確保是否有gpu
lspci | grep NVIDIA
01:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 940MX] (rev a2)
如果按照某些方法，安裝後系統進不了，可以使用recovery模式。
我按照ubuntu提示，安裝nvidia驅動後，系統進不去了。按照https://www.lizenghai.com/archives/29726.html裏的方法，通過進入recovery模式（可參考這裏https://www.jianshu.com/p/0180575d2366），使用apt卸載也沒用。最後通過dpkg -r nvidia-*卸載了。
親測可用的方法
參考https://www.performatune.com/en/how-to-install-nvidia-driver-on-ubuntu-18-04-lts/
#1. Delete installed Nvidia drivers
sudo apt-get purge nvidia*
#2. Head to the following page to check the latest driver version:
https://www.nvidia.com/object/unix.html
#Linux x86_64/AMD64/EM64T
#Latest Long Lived Branch Version: 418.56
#3. Update your system
sudo apt-get update && apt-get upgrade
#3. Check the latest driver
ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0 ==
modalias : pci:v000010DEd00001436sv0000103Csd00008275bc03sc00i00
vendor : NVIDIA Corporation
model : GM206GLM [Quadro M2200 Mobile]
driver : nvidia-driver-418 - third-party free recommended
driver : nvidia-driver-390 - distro non-free
driver : xserver-xorg-video-nouveau - distro free builtin
#5. Install appropriate nvidia driver:
sudo ubuntu-drivers autoinstall
#6. Check if your system is using nouveau open source driver:
lsmod | grep nouveau
#If nouveau is in use, you need to disable it before reboot.
這裏很重要，不然2個驅動（新裝的驅動和nouveau）可能會引起系統無法進入。
#Nouveau disabling
user@hostname:/etc/modprobe.d# bash -c "echo blacklist nouveau > /etc/modprobe.d/blacklist-nvidia-nouveau.conf"
user@hostname:/etc/modprobe.d# bash -c "echo options nouveau modeset=0 >> /etc/modprobe.d/blacklist-nvidia-nouveau.conf"
user@hostname:/etc/modprobe.d# cat /etc/modprobe.d/blacklist-nvidia-nouveau.conf
blacklist nouveau
options nouveau modeset=0
#7. Reboot
reboot
#8. Check your driver installation:
nvidia-smi
#or
lsmod | grep nvidia
成功後如下
user@hostname:~>nvidia-smi
Fri Mar 22 08:20:39 2019
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 418.43 Driver Version: 418.43 CUDA Version: 10.1 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 Quadro M2200 Off | 00000000:01:00.0 On | N/A |
| N/A 45C P0 N/A / N/A | 1654MiB / 4043MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| 0 1925 G /usr/libexec/Xorg 89MiB |
| 0 2108 G /usr/bin/gnome-shell 44MiB |
| 0 2486 G /usr/libexec/Xorg 776MiB |
| 0 2611 G /usr/bin/gnome-shell 323MiB |
| 0 2861 G ...are/jetbrains-toolbox/jetbrains-toolbox 401MiB |
| 0 2876 G cairo-dock 12MiB |
+-----------------------------------------------------------------------------+
#or you can use the following command
user@hostname:~>cat /proc/driver/nvidia/version
NVRM version: NVIDIA UNIX x86_64 Kernel Module 418.43 Tue Feb 19 01:12:11 CST 2019
GCC version: gcc version 8.3.1 20190223 (Red Hat 8.3.1-2) (GCC)
#third option to get the driver details
user@hostname:~>modinfo nv