Re: [gentoo-user] custom kernel with nvidia-drivers

[Alexander Kapshuk]

On Tue, Feb 14, 2017 at 12:33 PM, Raffaele Belardi
<raffaele.belardi@××.com> wrote:
> Time ago when I upgraded nvidia-drivers from 295 to 3xx series there was no
> way to start X, it would crash immediately with my custom built kernel.
> After many tests I switched to a kernel config taken from a live CD which
> worked (and still works) fine with the 3xx nvidia-drivers but pulls in a lot
> of stuff don't think I really need. I started to remove kernel options one
> by one to go back to a custom kernel but that is a painful road.
>
> Is there a minimal set of kernel options required to run the nvidia-driver
> documented somewhere? The gentoo wiki suggests to remove framebuffer, DRM,
> noveau but apparently that is not sufficient.
>
> The current graphic board is a GTX750-based, if it matters.
>
> thanks,
>
> raffaele
>

As far as generating a custom config file based on what modules are
loaded, you could try "make localmodconfig":
It's purpose is described here,
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/plain/README?id=refs/tags/v4.9.9:

Create a config based on current config and  loaded modules (lsmod).
Disables any module option that is not needed for the loaded modules.

To generate a custom config for a given architecture, "make defconfig"
might be a good way to start.
Create a ./.config file by using the default symbol values from either
arch/$ARCH/defconfig or arch/$ARCH/configs/${PLATFORM}_defconfig,
depending on the architecture.

I personally found the Gentoo wiki article that describes the initial
kernel configuration as well as which kernel options to set for my
nvidia card to be a good foundation to build upon.

Hope this makes sense.