I agree that we should keep the "platform" default, as it went in 2 releases ago (nearly 6 months) without any reported failures until this one -- and it fixed a longstanding issue documented on many machines. We should debug Qi's failure like any other. We are actually in better shape on this one than others because we already know something that works around it. Qi, Please open a bug report here: http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI in the Power-Off category. There are some other open poweroff bugs and maybe we'll find a common thread. Please attach the output from acpidump and dmesg -s64000. 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