Comment 51 for bug 261318

The 2.6.28 kernel works for me -- the hotkeys give ACPI events again. However, I run into two other issues: some hotkeys are incorrectly defined for the laptop's keyboard, and acpi_fakekey doesn't work ( https://bugs.launchpad.net/ubuntu/+source/linux/+bug/217504 ).
Interestingly enough, it seems like any combination of fn+letter gives an ACPI event; too bad there's no easy way to expose that to userspace.