nvidia-settings在Ubuntu 12.04中无法正常工作

我使用的是Ubuntu 12.04.5。 我想升级到14.04,但更新管理员告诉我,我的图形硬件可能不适合14.04,如下所示:

Your graphics hardware may not be fully supported in Ubuntu 14.04. Running the 'unity' desktop environment is not fully supported by your graphics hardware. You will maybe end up in a very slow environment after the upgrade. Our advice is to keep the LTS version for now. For more information see https://wiki.ubuntu.com/X/Bugs/UpdateManagerWarningForUnity3D Do you still want to continue with the upgrade? 

我输出的lspci | grep VGA lspci | grep VGA提供以下内容:

 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [Quadro NVS 4200M] (rev a1) 

我不知道这是否是驱动程序的问题,所以我开始配置我的nvidia驱动程序。 当我执行:

 $ nvidia-settings 

我收到以下消息:

 ** (nvidia-settings:3220): WARNING **: PRIME: Failed to execute child process "/usr/bin/prime-supported" (No such file or directory) ** Message: PRIME: is it supported? no ERROR: nvidia-settings could not find the registry key file. This file should have been installed along with this driver at /usr/share/nvidia/nvidia-application-profiles-key-documentation. The application profiles will continue to work, but values cannot be preopulated or validated, and will not be listed in the help text. Please see the README for possible values and descriptions. 

所以我尝试了这个:

 $ sudo apt-get install nvidia-prime 

然后我的GUI将在重新启动后不再工作。 当我启动系统时,我被命令行留下了。 我删除了包,我回到了GUI。 有谁知道这里的问题是什么?

谢谢!!

您的nVidia驱动程序未正确安装,这就是升级抱怨的原因:
它正在回归集成显卡……根据您的处理器速度,可能会很慢。

我的建议是:

  1. 使用CloneZilla进行完整的系统备份
  2. 删除nvidia驱动程序:

      sudo apt-get purge nvidia* 
  3. 升级
  4. 使用14.04下的问答再次安装nvidia驱动程序。