Ubuntu如何卸载cuda driver

Posted 2022-03-04 SpaceVision

Ubuntu上安装了cuda driver后不能启动进入界面，只好通过recovery模式进入，然后卸载cuda driver。

参考地址：

How to uninstall the NVIDIA drivers on Ubuntu 20.04 step by step instructions

​​https://linuxconfig.org/how-to-uninstall-the-nvidia-drivers-on-ubuntu-20-04-focal-fossa-linux​​

这里列出了两种方法，介绍如下，

方法一: Uninstall the Ubuntu repository and PPA NVIDIA drivers

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2. The following command will remove the proprietary Nvidia driver: $ sudo dpkg -P $(dpkg -l | grep nvidia-driver | awk print $2) $ sudo apt autoremove
   
3. Switch back to nouveau driver: $ sudo apt install xserver-xorg-video-nouveau
   
   The above switch from Nvidia to Nouveau driver can also be performed from GNOME GUI ​​Software & Updates​​ application window.
   
4. Reboot your system.
5. Once your system has rebooted confirm loaded ​​nouveau​​​ modules: $ lsmod | grep nouveau nouveau 1949696 4 mxm_wmi 16384 1 nouveau ttm 106496 1 nouveau drm_kms_helper 184320 1 nouveau drm 491520 7 drm_kms_helper,ttm,nouveau i2c_algo_bit 16384 1 nouveau wmi 32768 3 wmi_bmof,mxm_wmi,nouveau video 49152 1 nouveau
   
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方法二：Uninstall the official NVIDIA drivers

For Nvidia drivers downloaded and installed from the ​​official Nvidia ​​website follow the below steps for Nvidia driver uninstall and to switch back to Nouveau opensource driver.

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2. Locate the installation script used to install the Nvidia driver. In case you cannot locate the original installation script simply ​​re-download it again.​​​ $ ls NVIDIA-Linux-x86_64-440.44.run
   
3. Uninstall the Nvidia Driver. Update the below Nvidia script name where appropriate : $ sudo bash NVIDIA-Linux-x86_64-XXX.XX.run --uninstall
   
4. If you have not done so yet, restore your ​​xorg​​​ original configuration from backup: $ sudo nvidia-xconfig --restore-original-backup
   
5. Enable Nouveau modules. If you followed our guide on ​​how to disable nouveau drivers on Ubuntu 20.04​​​ execute the following command: $ sudo rm /etc/modprobe.d/blacklist-nvidia-nouveau.conf
   
6. Reboot your Ubuntu 20.04 system.
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