Hi, In /var/log/messages I saw this: ACPI: System BIOS is requesting _OSI(Linux) ACPI: Please test with "acpi_osi=!Linux" Please send dmidecode to linux-acpi@vger.kernel.org So I have attached the requested information. Laptop is an Acer Travelmate 6460 running Fedora 7. Please send questions/remarks off-list as I am not subscribed. Regards, Patrick