关于nvidia.ko的问题

abuseyourdna

emerge -DNauv world  升级了nvidia-drivers后就无法startx

xorg.log中的错误信息为：FATAL:error inserting '/lib/modules/.../video/nvidia.ko ': invalid module format

我重新编译了内核，然后再安装nvidia-drivers(无错误提示)；但在modprobe nvidia时仍然出现同样的错误提示(内核版本与当前系统所使用的版本一致)。不知道问题到底出在什么地方，求解。

darrenlee

When you attempt to load the kernel module you receive a "insmod: error inserting ... Invalid module format"
This type of error can be diagnosed by running:
dmesg

The output from this command will indicate the source of the problem.

Common reasons for this error include:

    Using the wrong kernel preemption option.
    Your kernel module was compiled with a different gcc version than your kernel. In this case simply re-emerge the kernel and nvidia kernel module.

[edit] Preemption

In this case you'll probably see a message like: should be "<arch><kernel> preempt <gcc version>"

If the kernel is not compiled to be a preemptible kernel then trying to insert the nvidia.ko module will fail. To make the kernel preemptible use your favorite text editor to modify your kernel's configuration file (.config by default) and be sure to ammend: CONFIG_PREEMPT=y

As well as commenting out all other CONFIG_PREEMPT type options.

凑字数~~~~

abuseyourdna

Post by darrenlee;2139179
凑字数~~~~

按照引文中的方法在.config中确认"CONFIG_PREEMPT=y"后重新编译完内核，再次安装nvidia-drivers.结果：
failed to load the module "NVIDIA"(module-specific error 0)