Submitter could you please check if your laptop showa some weird ACPI messages at startup? Often this kind of problems is related to a bad DSDT. Something like ACPI-1133: *** Error: Method execution failed [\_SB_.BAT1.SEBI] (Node dfeee248), AE_AML_UNINITIALIZED_LOCAL ACPI-1133: *** Error: Method execution failed [\_TZ_.THRM._TMP] (Node dfeeec68), AE_AML_UNINITIALIZED_LOCAL or so. -- Francesco P. Lovergine