On Thu, 2007-02-22 at 17:27 +0100, Pierre Ossman wrote: > Thomas Gleixner wrote: > > > > Here is the reason. The local APIC stops working in C3 state and we fall > > back to the PIT in that case. Not really exciting for dynticks, but the > > only way to keep the system alive. There is a patch coming up from > > Intel, which finds out how to use HPET even if it is not enabled by the > > BIOS. This will still end up on IRQ#0, but will give way longer idle > > sleeps than the PIT. > > > > > > So then the next two questions are; is it possible to disable C3
yeah there is a commandline thingy for it > and is > it a net power gain to get rid of the wakeups in favor of having C3. no; c3 saves a TON more power. you can try enabling HPET in your BIOS... -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
