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A comment on Lenovo: researchers find 'massive security risk'. Parent comment
- The CPU fan might be controlled via ACPI.
- The operating system is supposed to run ACPI code provided by the BIOS.
- A BIOS can specify different sets of ACPI code for different operating systems, so Linux might get different code from Windows.
- The ACPI code provided by the BIOS for Linux might be broken, or lacking fan control.
- The hardware vendor may have decided not to provide APCI controls for anything, relying instead on proprietary interfaces.
Section 1.9 of https://www.kernel.org/doc/ols/2005/ols2005v1-pages-59-76.pd... looks like it might be related.
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- The CPU fan might be controlled via ACPI.
- The operating system is supposed to run ACPI code provided by the BIOS.
- A BIOS can specify different sets of ACPI code for different operating systems, so Linux might get different code from Windows.
- The ACPI code provided by the BIOS for Linux might be broken, or lacking fan control.
- The hardware vendor may have decided not to provide APCI controls for anything, relying instead on proprietary interfaces.
Section 1.9 of https://www.kernel.org/doc/ols/2005/ols2005v1-pages-59-76.pd... looks like it might be related.