Date: Sun, 2 Mar 2008 23:06:59 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Johannes Dieterich <dieterich.joh@googlemail.com> Cc: Peter Jeremy <peterjeremy@optushome.com.au>, freebsd-acpi@freebsd.org, "Alexandre \"Sunny\" Kovalenko" <alex.kovalenko@verizon.net> Subject: Re: [RFC] Patch to enable temperature ceiling in powerd Message-ID: <Pine.BSF.3.96.1080302221929.18107A-100000@gaia.nimnet.asn.au> In-Reply-To: <47C99158.4000106@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, 1 Mar 2008, Johannes Dieterich wrote: > Hello everybody! > > To get back to this discussion (sorry, normal job kicked me quite a bit > last week). > > Peter Jeremy wrote: > > On Wed, Feb 20, 2008 at 05:06:41PM -0500, Daniel Eischen wrote: [..] > > investigating an unrelated problem. We eventually decided it was a > > faulty sensor and a replacement board fixed it. > What I have now is the original hard drive (some 80 gig Fujitsu one) > with a freshly installed Fedora 8 on it. I have been letting two > instances of gnuchess playing against each other for a couple of hours > (yes, I know... best stress test ever... ;-) ) which kept cpu usage at a > nice 100 percent on both cores for all that time. I doubt that it amounts to a buildworld, which flogs the disk pretty hard too, but that should serve well enough for relative comparison. > proc/acpi/thermal_zones/THM1/temperature (and THM0) reported > temperatures around 70 degrees, never over 72 for all that time. Lid was > closed, fan worked (not very noisy even) and blew a good load of hot air > out. I am tempted to say that my overheating problem is not hardware > related. Only parts different were ath0 not working with Fedora and hard > drive being not the 160 gig WD I am using for FreeBSD. You could expect your 160GB drive to run a few degrees warmer, but most likely still inside the tz1._PSV=80C suggested most recently, however you haven't said whether you've yet tried applying the tz1 settings that Alexandre last suggested as working well for his very similar model Thinkpad on Feb 21st (previous message on this thread to yours)? > >> Only under load does the temperature > >> shoot up, but I know the chip isn't getting hot and the fan > >> is running - I've felt around in there and nothing was even > >> close to the 117+C it was sensing. But that was on tz0, wasn't it? Please read Alex's message carefully; if there's still something different about yours we likely need to know. > > Apart from the actual CPU, most parts of a system have a fairly > > significant thermal mass so a rapid change in temperature either > > indicates a catastrophic failure or the temperature sensor isn't > > really reporting the temperature of the relevant zone. > > > I totally agree with you, Peter. And either the hardware just fails > under FreeBSD (or with ath0 and the other hard drive running) OR it is > a FreeBSD problem. > > Everybody is invited to tell me how to stress test the system as brutal > as possible to show that the problem is hardware related. It's possible, but suspecting the hardware may have been a red herring. It does seem more clearly related to some the recent flurry of software changes to acpi_thermal.c, that should detect the fact that your cpu thermal zone tz1 is the one needing monitoring, rather than tz0. Again, please try what Alex suggested and report back in some detail? Even without updating to the latest -STABLE they might work with the overrides mentioned, though as all this appears to have been mfc'd in recent days, running the latest -STABLE would be the acid test. See: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/acpica/acpi_thermal.c HTH, Ian
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.96.1080302221929.18107A-100000>