Hi! > The ICH9 apparently provides a pair of memory mapped on-die thermal sensors. > > The sensors basically shut off your hardware if it gets too hot. Are the sensors driven by ACPI? Probably yes, otherwise they would be unable to shut down the system. > ICH9 exports the base address for the sensors via a PCI device -- D31:F6, aka Linux 00:1f.6 > > I'm not aware of a native Linux device driver that talks to this device > (nor can I think of a useful purpose for such a driver) > So it seems what is in play here is any BIOS code that talks to this device, > and Linux's standard PCI config space restore. > > My guess is that the BIOS is enabling the device on cold boot, > but not enabling it after resume from S3. That sounds like a BIOS problem, right? If the piece of hardware is driven by BIOS, Linux can't be responsible for saving/restoring it. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
