System Information Manufacturer: LENOVO Product Name: 89185QG Version: ThinkPad R61 Serial Number: L3A8343 UUID: 66286A01-495A-11CB-9BEA-E3DE5381FB5B Wake-up Type: Power Switch SKU Number: Not Specified Family: ThinkPad R61 With 2.6.22, did you notice any functional difference with "acpi_osi=!Linux"? (or since the default changed at 2.6.23, with 2.6.23 or later do you notice any difference with "acpi_osi=Linux"?) Please send me the output from acpidump. If you don't have acpidump, you can get it from pmtools here: http://www.lesswatts.org/projects/acpi/utilities.php thanks, -Len - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html