Thanks for the dmidecode output. 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) ...in particular, please check sound and wifi. 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 --- System Information Manufacturer: TOSHIBA Product Name: Satellite A135 Version: PSAD6U-00R00D Serial Number: 17265384K UUID: 772E8E64-A34A-11DB-B997-0016D490F070 Wake-up Type: Power Switch SKU Number: 012345678912345678912345678 Family: ABCDEFGHIJKLMNOPQRSTUVWXYZ Handle 0x0002, DMI type 2, 8 bytes Base Board Information Manufacturer: TOSHIBA Product Name: IAYAA - 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