在ubuntu1604按照nvidia官方文档安装CUDA后（http://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#post-installation-actions），不能正常进入图形化界面
- cat /var/log/syslog:
kernel: [ 72.264024] NVRM: this kernel module has the version 340.101. Please
kernel: [ 72.264024] NVRM: make sure that this kernel module and all NVIDIA driver
kernel: [ 72.264024] NVRM: components have the same version.
kernel: [ 72.264031] NVRM: nvidia_frontend_ioctl: minor 255, module->ioctl failed, error -22
nvidia-persistenced: Failed to query NVIDIA devices. Please ensure that the NVIDIA device files (/dev/nvidia*) exist, and that user 124 has read and write permissions for those files.
由于安装的cuda的版本是384，所以内核接口不兼容
- 移除旧的nvidia显卡驱动
#remove old version
sudo apt-get purse nvidia*
#stop grafical interface
sudo service lightdm stop
- 重新安装内核接口
download link: http://www.nvidia.cn/Download/index.aspx?lang=en
下载后的nvidia图形化驱动NVIDIA-Linux-x86_64-384.90.run
安装文档链接：http://us.download.nvidia.com/XFree86/Linux-x86_64/384.90/README/installdriver.html
#install kernel interface
cd yourdirectory
sh ./NVIDIA-Linux-x86_64-384.90.run --add-this-kernel
#run the executable
sh NVIDIA-Linux-x86_64-384.90.run
nvidia-installer会被安装在/usr/bin/nvidia-installer路径下
- 测试nvidia显卡是否正常工作
nvidia-smi
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 384.90 Driver Version: 384.90 |
|-------------------------------+----------------------+----------------------+
| 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 K1200 Off | 00000000:01:00.0 On | N/A |
| 39% 38C P8 1W / 35W | 3742MiB / 4041MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| 0 6150 G /usr/lib/xorg/Xorg 216MiB |
| 0 6581 G compiz 107MiB |
| 0 10327 C python 3405MiB |
+-----------------------------------------------------------------------------+
5. 启动ubuntu图形化界面
sudo service lightdm start
可以看到图形化桌面可以正常使用