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🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
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https://askubuntu.com/q/828903
Title:
Module disabled after kernel upgrade
ID:
/2016/09/24/Module-disabled-after-kernel-upgrade
Created:
September 24, 2016
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September 15, 2024
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acpi_call is not a regular program but a kernel module. Kernel modules must be compiled to a specific kernel version, else they are deemed incompatible and will not load.
DKMS (Dynamic Kernel Management System) will manage your custom kernel modules and recompile them within the current running kernel version and do so automatically whenever you download a new version. It will also update initrd which is part of the bootstrap loader process (nick-named boot). A unique initrd is in your /boot directory for each unique kernel version you have installed.
As CelticWarrior pointed out you can read detailed installation instructions for Ubuntu in: help.ubuntu.com/community/DKMS.
The project page itself is at: linux.dell.com/dkms/ and it contains some additional links you will find helpful.
I used DKMS for keeping EnhanceIO (A HDD to SSD caching program previously used for facebook servers) up to date. DKMS automatically compiled for various kernel versions and it works very well. Pay attention to error messages because parameters can change between kernel versions and new source code patches may be required from github.
For interested readers, the thought of compiling Kernel modules seems daunting at first but, once you get into it you’ll feel comfortable.