Please attach /var/log/dmesg and the output of "sudo dmidecode"
** Changed in: acpi (Ubuntu)
Sourcepackagename: acpi => linux-source-2.6.15
Binarypackagename: acpi => None
** Changed in: linux-source-2.6.15 (Ubuntu)
Status: Unconfirmed => Needs Info
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ACPI issues
https://launchpad.net/malone/bugs/35750