Kernel Kernel-Modules DKMS – Command to Rebuild All DKMS Modules for All Installed Kernels

dkmskernelkernel-modules

Occasionally, my system gets into a state where some kernels are missing a module or two, because DKMS somehow forgot to compile those modules for that kernel. Rather than spend time diagnosing the problem, it would be nice if there was a single command I could run that woudl just rebuild every dkms-controlled module for every installed kernel. Is there such a command?

Best Answer

I figured out a shell one-liner to do it:

ls /var/lib/initramfs-tools | \
    sudo xargs -n1 /usr/lib/dkms/dkms_autoinstaller start

This works because the names of the directories in /var/lib/initramfs-tools are exactly the kernel version names that you need to pass to dkms_autoinstaller to tell it to rebuild all modules for those kernel versions. Note that if you have uninstalled some old kernels, their directories might still be lying around and cause some errors to be reported, but this isn't a problem because dkms_autoinstaller will just do nothing for those kernel versions that aren't installed.

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Kernel – Building a New Vanilla Kernel and Handling Produced Debs

To answer the first question Why are there only two packages? or Why aren't there two header files? -- when they're cross compiled, they're packaged up to handle every use case. By splitting the headers into a larger all package and a smaller arch-specific one, you save bandwidth pushing them out to users. When you're doing it yourself, you only need it for one arch so one headers file will do.

As for the symlink through to your source location, I have had the same issue. I have not found a good fix other than to also generate a linux_source package (just add that on after kernel_image kernel_headers) and then fix the symlink manually.

There is actually a question all about this side of things already. The long-term solution seems to be hacking in a script that runs after each kernel installation that just fixes the symink up.

Ubuntu – Dkms: rebuild kernel module for manually installed upstrem kernel

Besides installing the linux-image-... package, you also need linux-headers-... . After installation of the headers, the modules for that kernel should be build automatically. If not, manually trigger a installation of modules for the current loaded kernel:

sudo dkms autoinstall -k $(uname -r)

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Kernel – Building a New Vanilla Kernel and Handling Produced Debs

Ubuntu – Dkms: rebuild kernel module for manually installed upstrem kernel

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