I have a p4 630 in a system that only supported through the P4 5xx series chips. I've written a custom DSDT that added C-States[C1-C4] and P-States[2.8+3.0Ghz, with a little VID drop], and have acpi-cpufreq working quite well with it. The only things I can think of left are getting MWAIT/C1E working and TM2. TM2 isn't a big concern of mine, as I rarely get it hot, but C1E would be neat to enable. I just can't figure out what to do to do it though. If I pass idle=mwait on the kernel command line, it disables acpi-cpufreq, or disables my custom DSDT table (not sure which). But with idle=mwait, it works, but no cpufreq or C-States. can anyone provide a pointer as to what to look at to fix this? Pat Erley -- 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