System Information Manufacturer: FUJITSU SIEMENS Product Name: AMILO Xi 1546 Version: Not Applicable Serial Number: 720056C3 UUID: 8012A1C5-4264-0010-ABDB-D1748A8F1498 Wake-up Type: Power Switch SKU Number: Not Specified Family: Not Specified 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