Date: Sun, 21 Dec 2008 15:11:14 -0500 From: Nathan Lay <nslay@comcast.net> To: "Paul B. Mahol" <onemda@gmail.com> Cc: freebsd-current@freebsd.org, freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Very serious cooling issues CURRENT/STABLE Message-ID: <494EA2E2.9050909@comcast.net> In-Reply-To: <3a142e750812210919s3bd5876q8f45759f1228906b@mail.gmail.com> References: <494DDA1B.6050206@comcast.net> <3a142e750812210514k6dc41c0o32d7ef57e765dcc8@mail.gmail.com> <494E712B.802@comcast.net> <3a142e750812210919s3bd5876q8f45759f1228906b@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Paul B. Mahol wrote: > On 12/21/08, Nathan Lay <nslay@comcast.net> wrote: > >> Paul B. Mahol wrote: >> >>> On 12/21/08, Nathan Lay <nslay@comcast.net> wrote: >>> >>> >>>> acpi.thermal.min_runtime: 0 >>>> hw.acpi.thermal.polling_rate: 10 >>>> hw.acpi.thermal.user_override: 0 >>>> hw.acpi.thermal.tz0.temperature: 37.0C >>>> hw.acpi.thermal.tz0.active: -1 >>>> >>>> >>> Is this one ever changed? >>> >>> >>> >>>> hw.acpi.thermal.tz0.passive_cooling: 1 >>>> hw.acpi.thermal.tz0.thermal_flags: 0 >>>> hw.acpi.thermal.tz0._PSV: 89.5C >>>> hw.acpi.thermal.tz0._HOT: -1 >>>> hw.acpi.thermal.tz0._CRT: 93.0C >>>> hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 >>>> >>>> >>> This one means that coling will never be used, why: >>> my output looks like this: >>> hw.acpi.thermal.tz0._ACx: 85.0C 75.0C 60.0C 50.0C -1 -1 -1 -1 -1 -1 >>> >>> >>> >>>> hw.acpi.thermal.tz0._TC1: 5 >>>> hw.acpi.thermal.tz0._TC2: 4 >>>> hw.acpi.thermal.tz0._TSP: 600 >>>> >>>> >>> You can play with all thermal values once you enable: >>> hw.acpi.thermal.user_override >>> >>> But acpi may redo such values again after some time. >>> You only real workaround is to use modified acpi ASL: >>> it is explained in handbook. >>> >>> In my case I fixed in that way bogus kernel >>> message "_CRT value is absurd, ignored". >>> >>> >>> >>> >> hw.acpi never displayed thermal values for some reason. However, after >> loading acpi_ibm, I can query those values without a problem >> dev.acpi_ibm.0.thermal: 49 41 33 48 27 -1 22 -1 >> >> I'm not sure the critical temperature (99C) is a problem, but what I >> have observed is you should never be near it. None of these thinkpads >> got over 80C under load with FreeBSD installed until recently. ACPI's >> ASL does not appear to be the problem as it has worked correctly in the >> past. >> > > Until recenty when, can you point into svn revision? > > If the same overheat happens with acpi disabled that I dont see how > freebsd acpi can help you. > > > Ok, I ran portupgrade on both systems with ACPI disabled. I do not experience any overheating issues. The thinkpads also do not feel very hot while building large ports like jdk16 and gcc42 as they do when ACPI is enabled. As I said, the laptops only started recently overheating. The T40 started overheating when CURRENT was installed and the T43 started overheating on a more recent STABLE. I'll try to pinpoint exactly which STABLE build experienced this. Best Regards, Nathan Lay
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?494EA2E2.9050909>