On Tue 2008-03-18 21:25:27, Eric W. Biederman wrote: > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> writes: > > > On Wed, 19 Mar 2008, Rafael J. Wysocki wrote: > > > >> Well, I've been saying that for I-don't-remember-how-long: on my box, if you > >> use S5 instead of entering S4, the fan doesn't work correctly after the > >> resume. Plain and simple. > >> > >> Perhaps there's a problem with our ACPI drivers that causes this to happen, > >> but I have no idea what that can be at the moment. > > > > IMO it would be worthwhile to track this down. It's a clear indication > > that something is wrong somewhere. > > > > Could it be connected with the way the boot kernel hands control over > > to the image kernel? Presumably ACPI isn't prepared to deal with that > > sort of thing during a boot from S5. It would have to be fooled into > > thinking the two kernels were one and the same. > > It should be easy to test if it is a hand over problem, by turning off > the laptop by placing it in S5 (shutdown -h now) and then booting same > kernel again. Feel free to help with testing. I believe ACPI is simply getting confused by us overwriting memory with that from old image. I don't see how you can emulate it with shutdown. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html pomozte zachranit klanovicky les: http://www.ujezdskystrom.info/ _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
