headers and kernel-devel

debu_chocobo · 01-24-2022, 09:49 PM

Hi there.

I patched and compiled 5.15.6 to fix a problem with my laptop's soundcard. The fix was successful, but now I have no headers and no kernel-devel.

kernel-headers was successfully generated and I installed it, but the NVIDIA installer (from NVIDIA's website) fails at DKMS:

Code:

ERROR: Failed to run '/usr/sbin/dkms build -m nvidia -v 470.94 -k 5.15.16': Error! Your kernel headers for kernel 5.15.16 cannnot be found at /lib/modules/5.15.16/build or /lib/modules/5.15.16/source.

Please install the linux-headers-5.15.16 package or use the --kernelsourcedir option to tell DMKS where it's located.

I copied the source from the unpacked tar to /lib/modules/5.15.16/source, but the error remains.

I'd like to get NVIDIA installed, but more than that, I'd like to get working kernel, headers and devel packages made, so I can share this fix with others.

I'm not very experienced with kernel compiling, so any help would be much appreciated.

Below is my hardware, and process for compiling the kernel.

Fedora 35, HP Spectre x360 15-eb0016TX.

Code:

curl https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.15.16.tar.xz|tar -xJ

cd  linux-5.15.16
vim ~/linux-5.15.16/sound/pci/hda/patch_realtek.c

Added the following line

Code:

SND_PCI_QUIRK(0x103c, 0x86e8, "HP Spectre x360 15-eb0xxx",

Code:

Make menuconfig
make -j7
make binrpm-pkg

smallpond · 01-25-2022, 11:43 AM

/lib/modules/5.15.16/build and source should be symbolic links. They are created by "sudo make install". What directions were you following to build and install the kernel?

EDIT: ooks like you are building an RPM. If so, the links are always broken when you install a RedHat kernel. Just overwrite them:

Code:

sudo ln -s mybuilddir /lib/modules/5.15.16/build
sudo ln -s build /lib/modules/5.15.16/source

debu_chocobo · 01-27-2022, 07:08 PM

Many thanks for the help!

I got the links working with your help, and now working packages with

Code:

make rpm-pkg

Now I'm having a problem with NVIDIA. When using the .run from NVIDIA's website, it seems to install okay, but I just get a blank screen when GDM starts. No error messages in journalctl.

Installing with

Code:

akmods --force

gives the error

Code:

akmodsbuild: error: Package has no %description: kmod-nvidia-5.15.16-Fedora.Spectre.5.15.15

This is the first fifteen lines of the spec.

Code:

Name: kernel
Summary: The Linux Kernel
Version: 5.15.16_Fedora.Spectre.5.15.16
Release: 1
License: GPL
Group: System Environment/Kernel
Vendor: The Linux Community
URL: https://www.kernel.org
Source: kernel-5.15.16_Fedora.Spectre.5.15.16.tar.gz
Provides:  kernel-5.15.16-Fedora.Spectre.5.15.16
%define __spec_install_post /usr/lib/rpm/brp-compress || :
%define debug_package %{nil}

%description
The Linux Kernel, the operating system core itself

Thanks for any help.

shruggy · 01-28-2022, 03:29 AM

You show the spec for package kernel, while the error message is about kmod-nvidia.