Comment 28 for bug 36158

Good point you raised here tsanghan , however there's one thing I did not understand well, does it mean your motherboard is older than the year 2000 ?
If not it just shows that there is something really wrong with the ACPI section in the actual kernels.

For my system, the Tyan Tiger K8W, it is at most older than september 2003, I bought mine last year and I did the Bios upgrades.