Thanks, Dirk, for the dmidecode, System Information Manufacturer: Dell Inc. Product Name: Inspiron 1501 Version: Not Specified Serial Number: 6R9GQ2J UUID: 44454C4C-5200-1039-8047-B6C04F51324A Wake-up Type: Power Switch SKU Number: Not Specified Family: Not Specified Handle 0x0003, DMI type 2, 8 bytes Base Board Information Manufacturer: Dell Inc. Product Name: 0UW744 Do you notice any functional difference when booting with "acpi_osi=Linux" (default for 2.6.22 and earlier) vs. "acpi_osi=!Linux" (default for 2.6.23 and later) Also, please send me the output from acpidump. thanks, -Len ps If you don't have acpidump, you can get it from pmtools here: http://www.lesswatts.org/projects/acpi/utilities.php - 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