On Tue 2008-08-12 16:57:58, Milan Broz wrote: > Rafael J. Wysocki wrote: > > On Tuesday, 12 of August 2008, Pavel Machek wrote: > >> On Tue 2008-08-12 13:44:27, Milan Broz wrote: > >>> Pavel Machek wrote: > >>>> Hi! > >>>>>> On Tue, Aug 12, 2008 at 11:41:35AM +0200, Pavel Machek wrote: > >>>>>>>>> Aug 6 11:00:10 amd kernel: ACPI: Critical trip point > >>>>>>>>> Aug 6 11:00:10 amd kernel: Critical temperature reached (128 C), > >>>>>>>>> shutting down. > >>>>>>>>> Aug 6 11:00:10 amd shutdown[24414]: shutting down for system halt > >>>>>>>>> > >>>>>>>>> ...and machine went down at that point :-(. > >>>>>>>> I hope you can easily reproduce it? > >>>>>>>> > >>>>>>>> So it's new in 2.6.27rc1 and wasn't in 2.6.26? Can you please > >>>>>>> Yes, I'm very sure. It makes machine basically unusable. > >>>>>> Does this mean you can easily reproduce it? > >>>>>> Please do a bisect then. > >>>>>> > >>>>>>> Not that one :-(. Thinkpad does not even have fan device: it is > >>>>>>> controlled by hardware. > >>>>> Hi, > >>>>> I see exactly the same on my x60s, but during upgrade to 2.6.26.2. > >>>> Are you sure? > >>> yes. maybe some userspace tool controlling frequency is involved, no idea yet. > >>> But it is 2.6.26 tree for sure. > >> So it definitely is in 2.6.26.2, and it definitely is in 2.6.26? > > > The bug is _not_ in 2.6.26, it was introduced in 2.6.26.1. > > The problem is, that now the CPU frequency doesn't decrease at some > temperature level and fan is unable to cool it properly. > > bisect on 2.6.26.y tree finished in this patch: > (I expect similar patch in 2.6.27-rc) > > commit 04f496871e8af87a1e40c504371a206fd7389193 > Author: Thomas Renninger <trenn@xxxxxxx> > Date: Wed Jul 30 18:20:10 2008 +0000 > > cpufreq acpi: only call _PPC after cpufreq ACPI init funcs got called already > > commit a1531acd43310a7e4571d52e8846640667f4c74b upstream > > Ingo Molnar provided a fix to not call _PPC at processor driver > initialization time in "[PATCH] ACPI: fix cpufreq regression" (git > commit e4233dec749a3519069d9390561b5636a75c7579) > > But it can still happen that _PPC is called at processor driver > initialization time. > > This patch should make sure that this is not possible anymore. > > > > That seems strange to me... please could anyone verify that it > on some other x60? Verified. Your patch from the next email fixes the problem here. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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
