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Okay, fine: "Why is a kernel module writing to my BIOS"?

To update your BIOS. In this case the kernel module doing that was buggy and not ready. The real question is why the module was enabled by Canonical.

Again. Why is a kernel module writing to the BIOS?

The BIOS is not to be messed with by user software or the OS. It should be signed and only changed by the manufacturer tool to update it.

To update the BIOS. That was its express purpose. Note that the kernel module was contributed by the BIOS manufacturer itself.

Why are you so enamored with giving up control of your hardware to the laptop manufacturer?

From never-fixed bugs in manufacturer's firmware to setting up things to happen on the next boot, there are innumerable reasons to write to the BIOS from a higher level.

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