Am Sun, 21 Dec 2008 00:54:35 -0500 schrieb Nathan Lay <ns...@comcast.net>:
> Hi list(s) > Early in the year I noticed CURRENT failed to cool my frankenstein > Thinkpad T40 (built from T40/40p parts) under load. The system would > shut down from critically high temperatures while building a port. I > did nothing special with ACPI. I thought nothing of it since, after > all, I rebuilt a broken T40 from T40p parts. Today, however, I > noticed that a very recent STABLE build failed to keep my T43 cool > while building ports. It reached temperatures of 97, 98, 99C. Hallo Nathan, I can confirm this on a T60p. My notebooks shuts down since I use 7.0 at 101°C. I have written a script that throttles the CPU if it gets above 75°C. I have to use it when I'm building world or ports. Btw, I have reported the problem here a some time ago [1]. I have received some feedback that IBM/Lenovo uses wrong cooling strategy placing the CPU and the VGA under one single cooled surface and using too much thermal grease. On the other hand I have also emphasized that the fan should be able to have about 800rpm more at the temperature of 80°C, but this has been ignored so far. This is why I have never had any problems running "the other common operating systems" and I have put them under heavy load. They don't exceed 85°C. > It > used to reach a max temperature of 80C while building a port (idling > temperature is ~ 45C). It behaved normally from 5.3 all the way > through 7.0. To remedy both issues, I had to underclock the > processor (via dev.cpu) and force the fan to its highest (I'm running > 533MHz shy of the processor's full potential, with a fan level of 7 > to keep the temperature at ~75C). I have one further hint for you. The VGA is running very hot on FreeBSD (~75°C when idle), because it is not able to throttle the GPU and its voltage. Maybe you've had a working setup for your GPU before and you even did not notice? Did you change your Xorg drivers? > I've always suspected FreeBSD's > ACPI didn't work properly on Thinkpad T series laptops (I have T40, > T41, T42 and T43) as it could never fully use the fan (Windows XP can > rev the fan far higher than acpi_ibm's level 7). Between STABLE and > CURRENT...something seems very wrong. These systems never had > cooling issues with FreeBSD before. The fan is running definitely too slow. On my system, too. Thanks, Martin References: [1] http://lists.freebsd.org/pipermail/freebsd-stable/2008-June/042812.html _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
